Short answer
An experience can come without scripture, but no one can check what it means. Zen teaches that awakening passes from master to student, "outside the scriptures". That saying cannot be traced back to the Buddha. Its first sure use is from 952, and the four-line verse first stands whole in 1108. The Pali texts say the Buddha kept nothing secret and appointed no heir. An experience can be real and still not settle what is true about God (﷾) or what follows death. The Pali texts themselves describe meditators who saw something real and drew a false view from it. So a teaching with no text has nothing to be tested against. Islam offers the opposite: one Book, open to everyone, with nothing held back. The Qur'an asks every reader to search it for discrepancy. Read it and test it.
Full explanation
What Zen teaches
Buddhism has two great branches. Theravada keeps the Pali texts, and Mahayana adds further sutras (scriptures). Zen is a Mahayana school, called Chan in China. It sums itself up in four lines. The first two are a special transmission outside the scriptures, and no dependence on words and letters. The last two are pointing directly at the human mind, and seeing into one's nature and becoming a Buddha. So the heart of Zen is not a doctrine to read. It is an awakening, seen directly, which a master recognises in a student. That recognition joins the student to a line of masters said to reach back to the Buddha. This is a claim about authority. The last word lies in no book, but in that line. The page "Which texts are the Buddha's word?" asks which book holds the teaching. This page asks what follows if it is in no book at all. Two things need checking: whether the line is what it says, and whether direct seeing can show what is true.
Nagatomo writes that the Rinzai Zen school sums up its training in four mottoes. They are: a special transmission outside the scriptures; no dependence on words and letters; pointing directly at the human mind; and seeing into one's nature to become a Buddha. He reads the first two as pointing to a reality beyond words that opens up in meditation.
Schlütter says that in the mature Chan school, transmission rests on the moment a master recognises that a student has reached the same enlightened state, which joins the student to a lineage going back to the Buddha. He shows that the Dunhuang text of the Platform Sutra makes the text itself the authority: a person who has not received it has not received the sanction. He adds that in the Song and Yuan periods masters issued inheritance certificates as concrete proof of attainment and lineage.
How old is the formula?
Zen tradition credits the four lines to Bodhidharma, the monk said to have brought Zen to China. The historian Albert Welter traced them, and found a different story. The lines grew up separately. The Buddhist historian Zanning (919-1001) credits Bodhidharma with three of them. The line "outside the scriptures" is not among them. The first use of that line that can be documented with certainty is in a Chan collection of 952. A tomb inscription for the master Linji (died 866) also has it, but the Zen scholar Yanagida Seizan finds that inscription highly doubtful. The four lines first stand together, credited to Bodhidharma, in a work of 1108. So the one line that sets Zen outside the scriptures is the one with the weakest roots. A late date alone proves nothing against a teaching. The point is what this line claims: to describe what the Buddha himself passed on. Yet its first sure record comes more than a thousand years after him.
Welter traces the four slogans. Each is found before the Song period, but they do not stand together until a work of 1108, which credits them to Bodhidharma. Tsan-ning (Zanning, 919-1001) credits Bodhidharma with three of them, without "a special transmission outside the scriptures". The first use of that line that can be documented with certainty is in the Zutang ji, compiled in 952. A tomb inscription for Linji also has it, but the Rinzai scholar Yanagida Seizan finds it highly doubtful. The flower and Kasyapa's smile are first mentioned in Chan transmission records in the Tiansheng Guangdeng Lu; the earlier Jingde Chuandeng Lu (1004) has a transmission to Kasyapa without them. A sutra then carried the story with the words "outside the scriptures": there is no evidence it existed before the Song, and it is widely regarded as apocryphal. Welter also records the dispute inside Chan: Yanshou (904-975) held that Chan agrees with the scriptures, and the compiler of the 1108 work scorned those who take "no words" to mean abandoning the scriptures. He concludes that there was no one agreed view and that even basic principles were disputed.
Hershock gives the traditional account of the flower and of Bodhidharma as the purported twenty-eighth holder of the line. He says the four-fold phrasing came to be used in Song dynasty China. He writes that contemporary scholars regard this account, and much of what Chan came to regard as its own history, as inventions of tradition, citing McRae (2003) and Faure (1991).
The flower story and the line of masters
Zen's founding story says that the Buddha once held up a flower before his listeners, and all were silent. Only his disciple Mahakasyapa smiled, and the Buddha entrusted his teaching to him. Zen's list of masters then runs from Mahakasyapa to Ananda, and on to Bodhidharma as the twenty-eighth. Welter finds no flower and no smile in the Jingde Chuandeng Lu, a Chan record of 1004. The story first appears in Chan records in the Tiansheng Guangdeng Lu, compiled in 1036. A sutra then gave the story the Buddha's own voice, with the words "outside the scriptures". There is no evidence that this sutra existed before the Song period (960-1279), and it is widely regarded as a later composition. So the claim to stand outside scripture came to lean on a scripture. The Stanford Encyclopedia of Philosophy reports that scholars now regard this account, and much of Chan's history of itself, as "inventions of tradition". A Buddhist magazine says as much. It says legend places Chan's beginning in India, while history places it in China around the sixth century. None of this shows that any Zen teacher is dishonest. It shows that the first links of the chain cannot be found, and a chain is only as sure as its first links.
The Buddha holds a flower before his listeners, and all are silent. Only Mahakasyapa smiles. The Buddha says he has the true teaching, which is not expressed by words but specially transmitted beyond teaching, and that he has given it to Mahakasyapa.
A Japanese Zen record of the line of masters. It names Mahakasyapa as the First Ancestor and tells the flower story: the Buddha held up a flower, Kasyapa smiled, and the Buddha entrusted his teaching to him. Ananda is the Second Ancestor and Bodhidharma the Twenty-eighth. A note in this edition dates the Tiansheng Guangdeng Lu to 1036.
Welter traces the four slogans. Each is found before the Song period, but they do not stand together until a work of 1108, which credits them to Bodhidharma. Tsan-ning (Zanning, 919-1001) credits Bodhidharma with three of them, without "a special transmission outside the scriptures". The first use of that line that can be documented with certainty is in the Zutang ji, compiled in 952. A tomb inscription for Linji also has it, but the Rinzai scholar Yanagida Seizan finds it highly doubtful. The flower and Kasyapa's smile are first mentioned in Chan transmission records in the Tiansheng Guangdeng Lu; the earlier Jingde Chuandeng Lu (1004) has a transmission to Kasyapa without them. A sutra then carried the story with the words "outside the scriptures": there is no evidence it existed before the Song, and it is widely regarded as apocryphal. Welter also records the dispute inside Chan: Yanshou (904-975) held that Chan agrees with the scriptures, and the compiler of the 1108 work scorned those who take "no words" to mean abandoning the scriptures. He concludes that there was no one agreed view and that even basic principles were disputed.
Hershock gives the traditional account of the flower and of Bodhidharma as the purported twenty-eighth holder of the line. He says the four-fold phrasing came to be used in Song dynasty China. He writes that contemporary scholars regard this account, and much of what Chan came to regard as its own history, as inventions of tradition, citing McRae (2003) and Faure (1991).
The introduction in this Buddhist magazine says that legend has Chan begin in India, when the Buddha passed his teaching to Mahakasyapa alone. It says history tells a different story: that Chan arose in China around the sixth century.
- 952
First sure use
"Outside the scriptures" is first documented with certainty, in a Chan collection.
- Before 1001
Zanning
He credits Bodhidharma with three of the lines. "Outside the scriptures" is not among them.
- 1004
No flower yet
The Jingde Chuandeng Lu has no flower and no smile.
- 1036
The flower story
It first appears in Chan records, in the Tiansheng Guangdeng Lu.
- 1108
All four lines
They first stand together, credited to Bodhidharma.
Zen's own books do not agree with the slogan
The slogan was disputed inside Zen itself, and that matters to a seeker who is told that asking for a text misses the point. An early text credited to Bodhidharma is the Two Entrances and Four Practices. It says that one way in is to awaken to the truth through the teaching. It adds a warning against clinging even to the scriptures, but it starts from the teaching. The Platform Sutra is the most famous Zen book, credited to Huineng, the sixth master in China. Its oldest surviving version, found at Dunhuang in China, goes further. It makes the text itself the authority: a person who has not received it has not received the approval. Later editions dropped this, as masters came to issue written certificates as proof of inheritance. In the tenth century Yanshou held that Chan agrees with the scriptures. The compiler of the 1108 work scorned those who take "no words" to mean abandoning the scriptures. Dogen, the thirteenth-century Japanese master, kept the line of masters. But he says that to set it "outside the scriptures" shows a lack of understanding. For him the one mind is not other than the sutras. So the formula is not Zen's one agreed voice. And everything Zen says about a wordless transmission has reached us in writing. Zen's own masters used writing to show who had received what.
One of the two ways in is to awaken to the truth through the teaching, with deep faith that all beings share one true nature. The same passage goes on to speak of not clinging even to the scriptures.
Hershock gives the traditional account of the flower and of Bodhidharma as the purported twenty-eighth holder of the line. He says the four-fold phrasing came to be used in Song dynasty China. He writes that contemporary scholars regard this account, and much of what Chan came to regard as its own history, as inventions of tradition, citing McRae (2003) and Faure (1991).
Schlütter says that in the mature Chan school, transmission rests on the moment a master recognises that a student has reached the same enlightened state, which joins the student to a lineage going back to the Buddha. He shows that the Dunhuang text of the Platform Sutra makes the text itself the authority: a person who has not received it has not received the sanction. He adds that in the Song and Yuan periods masters issued inheritance certificates as concrete proof of attainment and lineage.
Welter traces the four slogans. Each is found before the Song period, but they do not stand together until a work of 1108, which credits them to Bodhidharma. Tsan-ning (Zanning, 919-1001) credits Bodhidharma with three of them, without "a special transmission outside the scriptures". The first use of that line that can be documented with certainty is in the Zutang ji, compiled in 952. A tomb inscription for Linji also has it, but the Rinzai scholar Yanagida Seizan finds it highly doubtful. The flower and Kasyapa's smile are first mentioned in Chan transmission records in the Tiansheng Guangdeng Lu; the earlier Jingde Chuandeng Lu (1004) has a transmission to Kasyapa without them. A sutra then carried the story with the words "outside the scriptures": there is no evidence it existed before the Song, and it is widely regarded as apocryphal. Welter also records the dispute inside Chan: Yanshou (904-975) held that Chan agrees with the scriptures, and the compiler of the 1108 work scorned those who take "no words" to mean abandoning the scriptures. He concludes that there was no one agreed view and that even basic principles were disputed.
Dogen quotes someone's claim that the one mind passed to Mahakasyapa is a special transmission outside the scriptures. He says the claim shows a lack of understanding of the Buddha's teaching. He says the one mind is not other than the sutras, and that if there is no transmission outside the mind, there is none outside the scriptures. He does hold that the Buddha's teaching was truly passed on to Mahakasyapa.
What the Pali texts say about a hidden teaching
The Pali texts are the scripture of Theravada, and Zen does not take them as its last word. But they speak of the same men, and they point the other way. The Buddha tells Ananda that he kept no secret teaching and had no closed fist. Not long after the Buddha's death, a minister asks Ananda whether the Buddha appointed any monk to be a refuge. Ananda says no. Asked what holds the monks together, he says, "The teaching is our refuge." In the Vinaya (the Pali rules for monks), Mahakassapa answers the Buddha's death by calling the monks to recite the teaching and the rules together. He is the Mahakasyapa of the flower story. These are the first two names on Zen's list. In the Pali texts one denies any appointed heir, and the other gathers the monks around the spoken teaching. So the Pali record of these men has no room for a secret passed from one to the other.
“I've taught the Dhamma without making any distinction between secret and public teachings. The Realized One doesn't have the closed fist of a tutor when it comes to the teachings.”
““Worthy Ānanda, is there even a single mendicant who was appointed by the worthy Gotama, saying: ‘This one will be your refuge when I have passed away,’ to whom you would now turn?” “No, there is not.””
““We don’t lack a refuge, brahmin, we have a refuge. The teaching is our refuge.””
“So then, let’s recite the Teaching and the Monastic Law— before what’s contrary to the Teaching shines forth and the Teaching is obstructed;”
A Japanese Zen record of the line of masters. It names Mahakasyapa as the First Ancestor and tells the flower story: the Buddha held up a flower, Kasyapa smiled, and the Buddha entrusted his teaching to him. Ananda is the Second Ancestor and Bodhidharma the Twenty-eighth. A note in this edition dates the Tiansheng Guangdeng Lu to 1036.
How do you test what has no text?
A test needs something outside the thing being tested. A claim in words can be set beside a record, a second witness or the facts. In Zen, the check on awakening is a master's recognition. But that master's awakening was recognised by his own master, and so on back. Each link vouches for the next, and the chain ends in the story above. Nothing outside the chain can check it. A sincere teacher can be sincerely mistaken, and so can his teacher. That is why an outside test matters. Without one, a true transmission and a mistaken one look exactly the same. Welter's study shows the problem in Zen's own history: there was no one agreed view, and even basic principles were disputed. The page "How can we tell if a holy book really comes from God?" sets out tests that any book can face. A transmission outside every text cannot face them, because there is nothing to put to the test.
Schlütter says that in the mature Chan school, transmission rests on the moment a master recognises that a student has reached the same enlightened state, which joins the student to a lineage going back to the Buddha. He shows that the Dunhuang text of the Platform Sutra makes the text itself the authority: a person who has not received it has not received the sanction. He adds that in the Song and Yuan periods masters issued inheritance certificates as concrete proof of attainment and lineage.
Welter traces the four slogans. Each is found before the Song period, but they do not stand together until a work of 1108, which credits them to Bodhidharma. Tsan-ning (Zanning, 919-1001) credits Bodhidharma with three of them, without "a special transmission outside the scriptures". The first use of that line that can be documented with certainty is in the Zutang ji, compiled in 952. A tomb inscription for Linji also has it, but the Rinzai scholar Yanagida Seizan finds it highly doubtful. The flower and Kasyapa's smile are first mentioned in Chan transmission records in the Tiansheng Guangdeng Lu; the earlier Jingde Chuandeng Lu (1004) has a transmission to Kasyapa without them. A sutra then carried the story with the words "outside the scriptures": there is no evidence it existed before the Song, and it is widely regarded as apocryphal. Welter also records the dispute inside Chan: Yanshou (904-975) held that Chan agrees with the scriptures, and the compiler of the 1108 work scorned those who take "no words" to mean abandoning the scriptures. He concludes that there was no one agreed view and that even basic principles were disputed.
A student's awakening
A master recognises it
His own master recognised him
And so on back, link by link
The chain ends in the flower story, which scholars cannot trace
What an experience can and cannot show
This page does not deny the experience. Deep stillness and clarity are real. The question is what they prove. William James, the American philosopher and psychologist, studied such states in 1902 and was no enemy of them. He says they can carry authority for the one who has them, but they place no duty on anyone else to accept them uncritically. He also says the feeling has no content of its own, and can join itself to very different beliefs. So people report the same kind of experience and draw opposite conclusions about God (﷾). The Pali texts say this from within. The first of the Long Discourses describes a meditator who recalls past lives in deep concentration. He says, "Because of this I know" that the self and the cosmos are eternal. The Buddha calls such views "only the feeling of those who do not know or see". In the Great Analysis of Deeds, a meditator sees a wrongdoer reborn in a heavenly realm, and concludes that there are no bad deeds. The Buddha grants what was seen and refuses the conclusion, because his own knowledge "is otherwise". So in these texts a true sight led to a false teaching. The experience did not correct itself: something outside it had to. And that correction reaches a reader today only as a text. An inner state can show you your own mind. It cannot tell you what the One who made that mind asks of you, or what waits after death.
“No authority emanates from them which should make it a duty for those who stand outside of them to accept their revelations uncritically.”
“The fact is that the mystical feeling of enlargement, union, and emancipation has no specific intellectual content whatever of its own.”
“Because by dint of keen, resolute, committed, and diligent effort, and right application of mind I experience an immersion of the heart of such a kind that I recollect my many kinds of past lives, with features and details. Because of this I know: “The self and the cosmos are eternal, barren, steady as a mountain peak, standing firm like a pillar.”
“Now, these things are only the feeling of those who do not know or see, the anxiety and evasiveness of those under the sway of craving.”
“‘It seems that there is no such thing as bad deeds, and the result of bad conduct.”
“And when they obstinately stick to what they have known, seen, and understood for themselves, insisting that: ‘This is the only truth, anything else is futile,’ I also don’t grant them that. Why is that? Because the Realized One’s knowledge of the great analysis of deeds is otherwise.”
What the meditator saw
In deep concentration, a wrongdoer reborn in a heavenly realm.
What he concluded
There are no bad deeds.
What the Buddha said
He grants what was seen and refuses the conclusion.
Your own mind
What your Maker asks of you
What waits after death
- Can show
- Cannot show
A Book with nothing held back
Islam answers the same need with the opposite design. God (﷾) orders His Messenger to proclaim what was sent to him (5:67). Aisha said that anyone who claims he hid part of it is lying (Bukhari 4612). So the message was given openly, to everyone. The Prophet (ﷺ) said that every prophet was given signs that led people to believe, and that his own was the revelation itself (Bukhari 4981). So his proof is not a private moment. It is a text that is still here. The Qur'an says it is made "easy to understand and remember" (54:17). Anyone can open it today, and needs no one's permission. It also offers tests that it could fail. It says a book from anyone but God (﷾) would hold "Much discrepancy" (4:82). It challenges anyone in doubt to produce one sura like it (2:23). The page "Does the Qur'an contain contradictions or errors?" answers what critics claim to find. A claim that can fail in public is a claim that can be checked. That is what a transmission outside every text cannot offer.
“O Messenger! proclaim the (message) which hath been sent to thee from thy Lord. If thou didst not, thou wouldst not have fulfilled and proclaimed His mission. And Allah will defend thee from men (who mean mischief). For Allah guideth not those who reject Faith.”
Aisha said that whoever claims Muhammad (ﷺ) hid any part of what was revealed to him is lying, because Allah told him to proclaim it (5:67).
Abu Hurayra reports that the Prophet (ﷺ) said every prophet was given signs that led people to believe, but what he himself had been given was the revelation Allah sent to him, and so he hoped to have the most followers on the Day of Resurrection.
“And We have indeed made the Qur'an easy to understand and remember: then is there any that will receive admonition?”
“Do they not consider the Qur'an (with care)? Had it been from other Than Allah, they would surely have found therein Much discrepancy.”
“And if ye are in doubt as to what We have revealed from time to time to Our servant, then produce a Sura like thereunto; and call your witnesses or helpers (If there are any) besides Allah, if your (doubts) are true.”
| Question | Outside the scriptures | The Qur'an |
|---|---|---|
| Where is it? | In a line of masters, in no book. | In one Book, open to everyone. |
| Who can look at it? | A master, who recognises it in a student. | Anyone can open it today, with no one's permission. |
| How does it pass on? | From master to student. | Openly: the Prophet (ﷺ) was ordered to proclaim what was sent to him. |
| How is it tested? | By a master's recognition, and his master's before him. | Search it for discrepancy, or produce one sura like it. |
No one claims the unseen by his own sight
The Qur'an lets no one claim the unseen from his own inner vision. None in the heavens or on earth knows what is hidden except Allah (﷾) (27:65). Even the Prophet (ﷺ) is told to say, "If I had knowledge of the unseen, I should have multiplied all good" (7:188). The Qur'an warns that "fancy can be of no avail against truth" (10:36). It says that hearing, seeing and the heart will all be "enquired into" (17:36). So the heart answers to a higher judge. It is not the judge. To those who make claims about the next life the Qur'an says, "Produce your proof" (2:111). Islam does not forbid looking within. It says there are signs "in your own selves" (51:20-21), and that hearts find rest in remembering Allah (﷾) (13:28). But that looking leads to the Maker, and the calm is not offered as proof. Creation points anyone to its Maker. But what follows death, and what He asks of us, are known because He has told us.
“Say: None in the heavens or on earth, except Allah, knows what is hidden: nor can they perceive when they shall be raised up (for Judgment).”
“Say: "I have no power over any good or harm to myself except as Allah willeth. If I had knowledge of the unseen, I should have multiplied all good, and no evil should have touched me: I am but a warner, and a bringer of glad tidings to those who have faith."”
“But most of them follow nothing but fancy: truly fancy can be of no avail against truth. Verily Allah is well aware of all that they do.”
“And pursue not that of which thou hast no knowledge; for every act of hearing, or of seeing or of (feeling in) the heart will be enquired into (on the Day of Reckoning).”
“And they say: "None shall enter Paradise unless he be a Jew or a Christian." Those are their (vain) desires. Say: "Produce your proof if ye are truthful."”
“On the earth are signs for those of assured Faith, As also in your own selves: Will ye not then see?”
“"Those who believe, and whose hearts find satisfaction in the remembrance of Allah: for without doubt in the remembrance of Allah do hearts find satisfaction.”
Islam's answer: test the Book
Zen is right that no one can see for you. So see for yourself, and look at something that can be checked. Islam is a complete way of life: belief, worship and character together. It rests on a Book that any reader can open and test, not on a chain that ends in silence. The Prophet (ﷺ) invited people "on evidence clear as the seeing with one's eyes" (12:108). The Qur'an asks to be read with care (4:82). It names Muhammad (ﷺ) the Seal of the Prophets, meaning the last of them (33:40), sent to all people (7:158). Read the Qur'an, test it, and ask whether it is the word of God (﷾).
“Say thou: "This is my way: I do invite unto Allah,- on evidence clear as the seeing with one's eyes,- I and whoever follows me. Glory to Allah! and never will I join gods with Allah!"”
“Do they not consider the Qur'an (with care)? Had it been from other Than Allah, they would surely have found therein Much discrepancy.”
“Muhammad is not the father of any of your men, but (he is) the Messenger of Allah, and the Seal of the Prophets: and Allah has full knowledge of all things.”
“Say: "O men! I am sent unto you all, as the Messenger of Allah, to Whom belongeth the dominion of the heavens and the earth: there is no god but He: it is He That giveth both life and death. So believe in Allah and His Messenger, the Unlettered Prophet, who believeth in Allah and His words: follow him that (so) ye may be guided."”
Seven replies answered
Qur'an 42:11 — Surat al-Shura (Consultation), verse 11
“(He is) the Creator of the heavens and the earth: He has made for you pairs from among yourselves, and pairs among cattle: by this means does He multiply you: there is nothing whatever like unto Him, and He is the One that hears and sees (all things).”
Cited for
Words cannot hold the truth. Any scripture is only a finger pointing at the moon.
The response
Islam does not say that words hold the whole of the truth. The Qur'an says of God (﷾), "there is nothing whatever like unto Him" (42:11), and "No vision can grasp Him" (6:103). It says no person knows what delights are kept hidden for those who do good (32:17). But a thing can be greater than words and still be truly spoken of. A map is not the land, yet a map can be right or wrong. The Qur'an says it came down in a clear Arabic tongue, so that people may learn wisdom (26:192-195; 12:2). So it does not claim to hold all that God (﷾) is. It claims that what it says of Him is true, and it puts that claim to the test (4:82). The saying that words cannot hold the truth is itself made of words.
Where it lands — Words need not hold all of the truth to tell the truth. A stated claim can be tested, and a wordless one cannot.
Majjhima Nikaya 26 — Middle Discourses, discourse 26 (The Noble Search), segment 17.1
“I set out to discover what is skillful, seeking the supreme state of sublime peace. Traveling stage by stage in the Magadhan lands, I arrived at the town of Senā in Uruvelā.”
Cited for
The Buddha himself awakened with no scripture. He sat down and saw.
The response
The Pali texts do say that he sought awakening by his own striving, and found it (MN 26). But the same texts say what he did next. He taught in words, and near his death he left "the teaching and training" as the Teacher after him (DN 16). No one today can look into his awakening. All anyone has is what is said about it, in texts. So his story does not remove the need for a test. It makes the need plain.
Where it lands — Even the Buddha's awakening reaches us only as words, so the question of testing remains.
Qur'an 49:6 — Surat al-Hujurat (The Inner Apartments), verse 6
“O ye who believe! If a wicked person comes to you with any news, ascertain the truth, lest ye harm people unwittingly, and afterwards become full of repentance for what ye have done.”
Cited for
Islam has chains too. Why trust a chain of narrators and not a chain of Zen masters?
The response
The difference is what the chain carries. A hadith chain carries words, through people who are named. Scholars check each chain, and only the reports that pass are accepted. The page "How can we tell if a holy book really comes from God?" explains this. The Qur'an itself tells believers to ascertain the truth of news (49:6). A line of masters that carries something outside words gives no one anything to compare.
Where it lands — A chain can be tested when it carries words. A chain that carries silence cannot.
Qur'an 53:3-4 — Surat al-Najm (The Star), verses 3-4
“Nor does he say (aught) of (his own) Desire. It is no less than inspiration sent down to him:”
Cited for
The Qur'an also began as one man's experience. Why is his different from a Zen master's?
The response
No one is asked to trust his private moment. A reader is asked to take the Book he brought and test it (4:82; 2:23). His experience cannot be examined, but the Book can. And the Prophet (ﷺ) claimed no insight of his own. The Qur'an says he did not speak from his own desire (53:3-4). It has him say that he had no knowledge of the unseen of his own (7:188).
Where it lands — Islam's test is on a public Book, not on a private experience.
Digha Nikaya 16 — Long Discourses, discourse 16 (The Great Discourse on the Buddha's Extinguishment), segments 2.25.2-2.25.3
“I've taught the Dhamma without making any distinction between secret and public teachings. The Realized One doesn't have the closed fist of a tutor when it comes to the teachings.”
Cited for
The Pali texts are not the last word for Zen, so they cannot judge it.
The response
They are used here for a narrow reason: they speak of the very men Zen's list names. If they are set aside, the line still needs a record of its own. The earliest sure record of the formula comes more than a thousand years after the Buddha, and of the flower later still.
Where it lands — With or without the Pali texts, the line has no early record to stand on.
Qur'an 51:20-21 — Surat al-Dhariyat (The Winnowing Winds), verses 20-21
“On the earth are signs for those of assured Faith, As also in your own selves: Will ye not then see?”
Cited for
Muslims speak of the heart and of inner knowing too.
The response
They do. The Qur'an speaks of signs within, and of hearts at rest (51:20-21; 13:28). But it says the heart itself will be enquired into (17:36). It tells people to follow the revelation (7:3). So in Islam an inner state never adds to the revelation, and never overrules it.
Where it lands — In Islam the heart is answerable to the Book, not the other way round.
Qur'an 4:82 — Surat al-Nisa (The Women), verse 82
“Do they not consider the Qur'an (with care)? Had it been from other Than Allah, they would surely have found therein Much discrepancy.”
Cited for
A book is second-hand. You have to see for yourself.
The response
Islam agrees that you must look for yourself. The Qur'an asks each reader to consider it with care (4:82). It speaks of inviting people on evidence as clear as seeing with one's eyes (12:108). The difference is that the same text stands in front of everyone. What you find in it, anyone else can check.
Where it lands — Reading and testing a Book is seeing for yourself, in a way others can check.
Perspectives
Zen: the living transmission
Awakening is seen, not read. A master recognises it in a student, as his own master recognised it in him. Words can only point to it.
Awakening lies beyond words, so no text could hold it. Words only point, as a finger points at the moon.
Rebuttal
Islam agrees that God (﷾) is greater than any description: "there is nothing whatever like unto Him" (42:11). But words need not hold all of the truth to tell the truth. A finger can point right or wrong, and only a stated claim can be tested (4:82).
A master sees the student's mind directly, so his recognition is the test. No book is needed.
Rebuttal
That master was recognised by his own master, and so on back to a story scholars cannot trace. A chain cannot test itself. The Platform Sutra's oldest text even names a book as its authority.
A person drinks water and knows for himself whether it is cold or warm. Awakening is known the same way.
Rebuttal
Drinking tells you about the water in your mouth, and anyone else can drink and compare. It does not tell you where the water came from. What follows death cannot be sipped now.
The flower story is sacred teaching, not history. Its truth does not depend on dates.
Rebuttal
Then nothing ties the awakening to the Buddha. To say a teaching came from him is a claim about history, and only a record can support it. In the Pali record he keeps no closed fist.
Secular Zen
Many who sit in Zen today hold no belief about God or rebirth. They say Zen is a practice, not a creed.
Zen is a matter of sitting and seeing, not of doctrine. It asks you to believe nothing about God or the next life, so it needs no scripture and no proof.
Rebuttal
The verse's last line is itself a claim: seeing your nature is becoming a Buddha. And setting a question aside does not answer it. Everyone still dies, so what follows matters (23:115).
What the records show
Historians of Zen find that the formula and the founding story took shape long after the Buddha, and that Zen's own teachers disputed them.
The line "a special transmission outside the scriptures" is first documented with certainty in 952. The four lines first stand together in 1108.
The flower story is absent from the Chan record of 1004, and first appears in Chan records in the Tiansheng Guangdeng Lu (1036). The sutra that gives it the Buddha's voice is widely regarded as a later composition.
Scholars now regard the traditional account of Chan's origins as an invention of tradition.
The oldest text of the Platform Sutra makes the text itself the authority for transmission.
The Islamic perspective
An inner experience cannot settle what is true about God (﷾) or what follows death. God (﷾) has spoken in a Book that was given openly, and that any reader can test.
In the Pali texts, a true sight in meditation can lead to a false teaching.
In the Pali texts, the Buddha keeps no secret teaching and appoints no heir.
The Prophet (ﷺ) was ordered to proclaim all that was sent to him, and he hid none of it.
None but Allah (﷾) knows the unseen, and the heart itself will be enquired into.
The Qur'an invites any reader to search it for discrepancy and to produce one sura like it.
Muhammad (ﷺ) was sent to all people as the last of the prophets.