Reading guide
The teaching in one sentence
Mindfulness of breathing, developed through sixteen steps in four groups of four, fulfills the four establishments of mindfulness; the four establishments fulfill the seven awakening factors; and the seven awakening factors fulfill knowledge and freedom — one continuous practice, traced from the first conscious breath to full liberation.
An assembly free of chaff
The frame story is unusually elaborate. It is the end of the rains retreat, and senior mendicants have been instructing junior ones — some teaching groups of ten, twenty, thirty, even forty — who “realized a higher distinction than they had before.” On the traditional night for mutual admonition (pavāraṇā), the Buddha looks over the silent assembly and says simply, “I am satisfied with this practice” — then announces he will stay another month, so mendicants from further away can also come and train. When that month passes and the assembly gathers again under the Komudī full moon, he surveys them once more and calls this Saṅgha “free of chaff, pure, and consolidated in the core” — worth traveling many leagues to see, “even if you have to carry your own provisions in a knapsack.”
He then describes exactly who is present: mendicants who are fully awakened arahants; non-returners; once-returners; stream-enterers; and others committed to developing the seven classic sets of practice — the four establishments of mindfulness, the four right efforts, the four bases of psychic power, the five faculties, the five powers, the seven awakening factors, and the noble eightfold path — as well as the meditations on love, compassion, rejoicing, equanimity, the foulness of the body, and impermanence. Last of all, he names those developing mindfulness of breathing. It is only after this roll call of an extraordinarily accomplished audience that he turns to teach the practice itself.
One ladder, four rungs
Before the details, the Buddha states the whole architecture in a single compressed formula, worth holding in mind throughout everything that follows:
Everything else in the sutta is an unpacking of these three links: first the sixteen breathing steps themselves, then how they constitute the four establishments of mindfulness, then how those constitute the seven awakening factors, then how those culminate in liberation. It is one continuous practice described at four different resolutions, not four different practices.
Sixteen steps, four tetrads
The base instruction is deceptively simple: a mendicant sits down, sets the body upright, and “brings mindfulness to the present. Just mindful, they breathe in. Mindful, they breathe out.” The Buddha is careful with his phrasing here — not “concentrate on the breath” as a fixed object, but bring mindfulness to breathing as an ongoing, natural activity, observed rather than manipulated. From there, sixteen steps unfold in four groups of four:
| Tetrad | Four steps |
|---|---|
| 1 · Body | knowing the breath as heavy (long) or light (short); experiencing the whole breath; stilling the bodily process (the breath itself, growing subtle) |
| 2 · Feeling | experiencing rapture; experiencing bliss; experiencing the mental process; stilling the mental process |
| 3 · Mind | experiencing the mind; gladdening the mind; immersing the mind in samādhi; freeing the mind |
| 4 · Principles | observing impermanence; observing fading away; observing cessation; observing letting go |
The first twelve steps cultivate serenity (samatha): the breath itself grows calmer and more subtle, then the “mental process” (feeling and perception) grows calm, then the mind itself is gladdened, unified in samādhi, and released from the hindrances — the territory of deepening absorption. Notably, rapture and bliss here arise from tranquility rather than before it, the reverse of the more usual order into jhāna. The last four steps pivot to insight (vipassanā): now settled, the meditator observes impermanence, fading away, cessation, and letting go directly within the practice itself — watching the very process of calming that has just occurred. The commentary notes these final four can even be mapped onto the four stages of awakening: the stream-enterer sees that whatever arises also ceases; for the once-returner, greed and hate are visibly fading; for the non-returner, they have ceased; for the arahant, everything is fully relinquished.
Filling out the four establishments
The Buddha then shows how the sixteen steps are the four establishments of mindfulness (satipaṭṭhāna), not merely similar to them. The first tetrad (breath as heavy, light, whole, stilled) is mindfulness of the body, since “the in-breaths and out-breaths are an aspect of the body.” The second tetrad (rapture, bliss, mental process arising and stilling) is mindfulness of feeling, since careful attention to the breath is itself an aspect of feeling. The third tetrad (experiencing, gladdening, immersing, freeing the mind) is mindfulness of mind — and here the Buddha adds a sharp aside: “there is no development of mindfulness of breathing for someone who is unmindful and lacks awareness.” The fourth tetrad (impermanence, fading away, cessation, letting go) is mindfulness of principles, the reflective seeing of how covetousness and displeasure have been given up. Each, in the sutta’s refrain, is a mendicant “keen, aware, and mindful, rid of covetousness and displeasure for the world” — the exact language used to define the four establishments in MN 10.
Filling out the seven awakening factors
Next, the four establishments are shown to generate the seven awakening factors (bojjhaṅga) in strict sequence, each one arising as the natural consequence of the one before: established, lucid mindfulness initiates the mindfulness factor; investigating that experience with wisdom initiates investigation of principles; sustained investigation rouses unflagging energy; energy gives rise to rapture; a mind full of rapture becomes tranquil in body and mind; tranquility brings bliss, and the mind settles into immersion; and the meditator then simply “watches over” that immersed mind with equanimity. The same seven-step unfolding is said to occur however the meditator is observing — body, feeling, mind, or principles.
The final rung: knowledge and freedom
The sutta closes by explaining how the seven awakening factors, in turn, fulfill knowledge and freedom: when they are developed “relying on seclusion, fading away, and cessation, and ripening as letting go.” This closing phrase — seclusion, fading away, cessation, letting go — deliberately echoes the fourth tetrad’s own final four steps, underscoring the sutta’s central point: this is one seamless unfolding, from the first mindful breath to the ending of all defilements, not a sequence of separate techniques stacked on top of each other.
Key terms
The text
An assembly free of chaff
§1–9So I have heard. At one time the Buddha was staying near Sāvatthī in the stilt longhouse of Migāra’s mother in the Eastern Monastery, together with several well-known senior disciples — the venerables Sāriputta, Mahāmoggallāna, Mahākassapa, Mahākaccāna, Mahākoṭṭhita, Mahākappina, Mahācunda, Anuruddha, Revata, Ānanda, and others. At that time the senior mendicants were advising and instructing the junior mendicants, some teaching ten, some twenty, thirty, or forty; and being so instructed, the junior mendicants realized a higher distinction than before.
It was the sabbath, the full moon on the fifteenth day, and the Buddha was sitting surrounded by the Saṅgha for the invitation to admonish. Looking over the very silent assembly, he said: “I am satisfied, mendicants, with this practice. My heart is satisfied with this practice. So you should rouse up even more energy for attaining the unattained, achieving the unachieved, and realizing the unrealized. I will wait here in Sāvatthī for the Komudī full moon of the fourth month.” Mendicants from around the country heard of this and came to Sāvatthī to see the Buddha, and the senior mendicants instructed the junior mendicants even more.
When the Komudī full moon came, the Buddha looked over the silent assembly once more and said: “This assembly has no chaff, mendicants, it is free of chaff, pure, and consolidated in the core. Such is this Saṅgha of mendicants, such is this assembly! An assembly such as this is worthy of offerings, worthy of hospitality, worthy of a religious donation, worthy of greeting with cupped palms, and is the supreme field of merit for the world. For an assembly such as this, giving little becomes much, while giving much becomes even more. An assembly such as this is rarely seen in the world — worth traveling many leagues to see, even if you have to carry your own provisions in a knapsack.
For in this Saṅgha there are perfected mendicants who have ended the defilements… and are rightly freed through enlightenment. There are mendicants who, with the ending of the five lower fetters, are reborn spontaneously and extinguished there, not liable to return from that world. There are mendicants who, with the ending of three fetters and the weakening of greed, hate, and delusion, are once-returners. There are mendicants who, with the ending of three fetters, are stream-enterers, assured, destined for awakening. In this Saṅgha there are mendicants committed to developing the four kinds of mindfulness meditation… the four right efforts… the four bases of psychic power… the five faculties… the five powers… the seven awakening factors… the noble eightfold path… the meditation on love… compassion… rejoicing… equanimity… ugliness… impermanence. In this Saṅgha there are mendicants committed to developing the meditation on mindfulness of breathing.
One ladder, four rungs
§15–16“Mendicants, when mindfulness of breathing is developed and cultivated it is very fruitful and beneficial. Mindfulness of breathing, when developed and cultivated, fulfills the four kinds of mindfulness meditation. The four kinds of mindfulness meditation, when developed and cultivated, fulfill the seven awakening factors. And the seven awakening factors, when developed and cultivated, fulfill knowledge and freedom. And how is mindfulness of breathing developed and cultivated to be very fruitful and beneficial?
Sixteen steps
§17–21It’s when a mendicant — gone to a wilderness, or to the root of a tree, or to an empty hut — sits down cross-legged, sets their body straight, and brings mindfulness to the present. Just mindful, they breathe in. Mindful, they breathe out.
Body. Breathing in heavily they know: ‘I’m breathing in heavily.’ Breathing out heavily they know: ‘I’m breathing out heavily.’ When breathing in lightly they know: ‘I’m breathing in lightly.’ Breathing out lightly they know: ‘I’m breathing out lightly.’ They practice: ‘I’ll breathe in experiencing the whole body.’ ‘I’ll breathe out experiencing the whole body.’ They practice: ‘I’ll breathe in stilling the physical process.’ ‘I’ll breathe out stilling the physical process.’
Feeling. They practice: ‘I’ll breathe in experiencing rapture.’ ‘I’ll breathe out experiencing rapture.’ They practice: ‘I’ll breathe in experiencing bliss.’ ‘I’ll breathe out experiencing bliss.’ They practice: ‘I’ll breathe in experiencing the mental process.’ ‘I’ll breathe out experiencing the mental process.’ They practice: ‘I’ll breathe in stilling the mental process.’ ‘I’ll breathe out stilling the mental process.’
Mind. They practice: ‘I’ll breathe in experiencing the mind.’ ‘I’ll breathe out experiencing the mind.’ They practice: ‘I’ll breathe in gladdening the mind.’ ‘I’ll breathe out gladdening the mind.’ They practice: ‘I’ll breathe in immersing the mind in samādhi.’ ‘I’ll breathe out immersing the mind in samādhi.’ They practice: ‘I’ll breathe in freeing the mind.’ ‘I’ll breathe out freeing the mind.’
Principles. They practice: ‘I’ll breathe in observing impermanence.’ ‘I’ll breathe out observing impermanence.’ They practice: ‘I’ll breathe in observing fading away.’ ‘I’ll breathe out observing fading away.’ They practice: ‘I’ll breathe in observing cessation.’ ‘I’ll breathe out observing cessation.’ They practice: ‘I’ll breathe in observing letting go.’ ‘I’ll breathe out observing letting go.’ Mindfulness of breathing, developed and cultivated in this way, is very fruitful and beneficial.
Filling out the four establishments
§23–28And how is mindfulness of breathing developed so as to fulfill the four kinds of mindfulness meditation? Whenever a mendicant knows that they breathe heavily, or lightly, or experiencing the whole body, or stilling the physical process — at that time they’re meditating by observing an aspect of the body, keen, aware, and mindful, rid of covetousness and displeasure for the world. For the in-breaths and out-breaths are an aspect of the body.
Whenever a mendicant practices breathing while experiencing rapture, or bliss, or the mental process, or stilling the mental process — at that time they meditate observing an aspect of feelings, for careful application of mind to the breath is an aspect of feelings.
Whenever a mendicant practices breathing while experiencing the mind, or gladdening it, or immersing it in samādhi, or freeing it — at that time they meditate observing an aspect of the mind. (There is no development of mindfulness of breathing for someone who is unmindful and lacks awareness, I say.)
Whenever a mendicant practices breathing while observing impermanence, fading away, cessation, or letting go — at that time they meditate observing an aspect of principles, having seen with wisdom the giving up of covetousness and displeasure, watching over closely with equanimity. That’s how mindfulness of breathing fulfills the four kinds of mindfulness meditation.
Filling out the seven awakening factors
§29–40And how do the four kinds of mindfulness meditation fulfill the seven awakening factors? Whenever a mendicant meditates observing an aspect of the body, at that time their mindfulness is established and lucid: they have initiated the awakening factor of mindfulness. As they live mindfully they investigate that principle with wisdom: the awakening factor of investigation of principles. As they investigate, their energy is roused up and unflagging: the awakening factor of energy. When energetic, rapture not of the flesh arises: the awakening factor of rapture. When the mind is full of rapture, body and mind become tranquil: the awakening factor of tranquility. When the body is tranquil and they feel bliss, the mind becomes immersed in samādhi: the awakening factor of immersion. They closely watch over that immersed mind: the awakening factor of equanimity. The same sevenfold unfolding occurs whenever a mendicant meditates observing an aspect of feelings, mind, or principles. That’s how the four kinds of mindfulness meditation fulfill the seven awakening factors.
The final rung
§41–43And how do the seven awakening factors fulfill knowledge and freedom? It’s when a mendicant develops the awakening factors of mindfulness, investigation of principles, energy, rapture, tranquility, immersion, and equanimity, which rely on seclusion, fading away, and cessation, and ripen as letting go. That’s how the seven awakening factors, developed and cultivated, fulfill knowledge and freedom.” That is what the Buddha said. Satisfied, the mendicants approved what the Buddha said.
Self-check quiz
Ten questions. Click an answer to see immediate feedback. No score is recorded — this is for your own checking.