The Buddha and the assembled mendicants, in direct question and answer
Form
A question posed to the mendicants, their correct answer, and the Buddha's confirmation
Length
~1 minute to read
Northern parallel
A rough counterpart may exist in the Chinese Saṃyukta-āgama (T99), though this reading guide does not assert a specific matching sutra number
Difficulty
★★☆☆☆ — a genuine dialogue, distinct in form from SN 15.1-2's declared parables
Why this discourse
Where SN 15.1 and 15.2 simply declared their measures, this discourse asks the mendicants to reason it out themselves: which is more, the mother's milk each of them has drunk across their own countless past lives, or the water contained in all four oceans? The mendicants answer correctly without hesitation — the milk is more — and the Buddha confirms it, praising their understanding directly. The measure itself is smaller in scale than SN 15.1's continent of wood or SN 15.2's whole earth, but no less startling: an ordinary bodily substance, consumed daily in infancy, outweighing the largest bodies of water known.
Reading guide
A question, not a declaration
This is the first discourse in this saṃyutta to ask the mendicants to work out the answer themselves, rather than simply telling them the conclusion — a genuine dialogue rather than a one-way teaching.
The mendicants answer correctly, unprompted
Their response — “the milk we've drunk is more than the water in the four oceans” — comes immediately and without qualification, and the Buddha's reply, “good, good,” explicitly praises their grasp of the teaching.
A smaller-scale image than the discourses before it
Neither a whole continent's wood nor an entire planet's worth of clay, mother's milk is an ordinary, intimate substance — making the discourse's claim land differently, through familiarity rather than sheer physical vastness.
The four oceans as a fixed unit of comparison
Catūsu mahāsamuddesu, the four oceans, appears here as early Buddhist cosmology's standard reference for an immense body of water, the natural counterpart to SN 15.1's continent and SN 15.2's whole earth.
A pattern of Q&A that recurs through this vagga
This discourse's question-and-answer structure — distinct from SN 15.1-2's flat declarations — reappears in several of the discourses that follow, particularly those asking how long or how numerous eons are.
Key terms
mātuthaññaṁ pītaṁ — “the mother's milk you've drunk” — this discourse's title subject and its measure of accumulated past lives.
catūsu mahāsamuddesu udakaṁ — “the water in the four oceans” — the fixed cosmological unit this discourse's milk is measured against.
taṁ kiṁ maññatha — “what do you think?” — the question formula opening this discourse's dialogue, distinct from SN 15.1-2's declarative opening.
sādhu sādhu — “good, good!” — the Buddha's direct praise for the mendicants' correct answer.
anamataggoyaṁ … saṁsāro — “this transmigration has no known beginning” — the same refrain opening and closing this discourse, unchanged from SN 15.1-2.
The text
The discourse in full, including the source's own elision of the refrain's repeated middle clause. Translation: Bhikkhu Sujato (CC0, SuttaCentral).
§1At Sāvatthī. “Mendicants, this transmigration has no known beginning. No first point is found of sentient beings roaming and transmigrating, shrouded by ignorance and fettered by craving. What do you think? Which is more: the mother’s milk you’ve drunk while roaming and transmigrating for such a very long time, or the water in the four oceans?” “As we understand the Buddha’s teaching, the mother’s milk we’ve drunk while roaming and transmigrating is more than the water in the four oceans.”
§2“Good, good, mendicants! It’s good that you understand my teaching like this. The mother’s milk you’ve drunk while roaming and transmigrating for such a very long time is more than the water in the four oceans. Why is that? This transmigration has no known beginning. … This is quite enough for you to become disillusioned, dispassionate, and freed regarding all conditions.”
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Self-check quiz
Ten questions. Click an answer to see immediate feedback. No score is recorded — this is for your own checking.
Question 1 of 10
What question does the Buddha put to the mendicants in this discourse?
Correct: A. A question posed directly, not a declared parable.
Question 2 of 10
How do the mendicants answer, and how quickly?
Correct: A. An immediate, unqualified correct response.
Question 3 of 10
How does the Buddha respond to the mendicants' answer?
Correct: A. Sādhu sādhu, explicit praise for their grasp of the teaching.
Question 4 of 10
How does this discourse's structure differ from SN 15.1 and 15.2?
Correct: A. A genuine dialogue, distinct from the earlier discourses' one-way declarations.
Question 5 of 10
What fixed cosmological unit does this discourse compare mother's milk against?
Correct: A. Catūsu mahāsamuddesu udakaṁ, a standard cosmological reference point.
Question 6 of 10
How does this discourse's measure compare in scale to SN 15.1 and 15.2's images?
Correct: A. An ordinary, intimate substance rather than a continent or a planet.
Question 7 of 10
What pattern does this discourse's question-and-answer structure set up for later discourses in this vagga?
Correct: A. A recurring dialogue format, particularly for the eon-length discourses ahead.
Question 8 of 10
Who is the sole speaker in this discourse besides the mendicants themselves?
Correct: A. The Buddha poses the question and confirms the mendicants' answer.
Question 9 of 10
Where does the Buddha deliver this teaching?
Correct: A. The setting shared with most discourses in this collection.
Question 10 of 10
What numbering tag closes this discourse?
Correct: A. The fourth discourse of this vagga (SN 15.3 already exists as a published page).
