Aṅguttara Nikāya · Discourse 5.23

Corruptions

Upakkilesasutta — Pañcaṅgikavagga — the third chapter of the Fives

Setting
None stated; the discourse continues from AN 5.1, whose setting at Sāvatthī in Jeta’s Grove is understood to hold
Speakers
The Buddha alone, addressing the mendicants
Form
A metalworking simile mapped directly onto the mind, followed by an extended list of what a purified mind is capable of
Length
~5 minutes to read
Northern parallel
The gold-refining simile for mental purification and the six superhuman abilities are widely attested across the Chinese Āgamas; this reading guide does not assert a specific matching sutra number
Difficulty
★★★★☆ — the chapter's longest discourse so far, naming the five hindrances by their classic list for the first time in the Fives

Why this discourse

This discourse names, for the first time in the Fives, the five nīvaraṇa: sensual desire, ill will, dullness and drowsiness, restlessness and remorse, and doubt — the classic hindrances that will eventually give an entire chapter of this nipāta its name. Here they arrive under a different label, upakkilesa, corruptions, mapped directly onto five corruptions of native gold: iron, copper, tin, lead, and silver, each of which leaves gold brittle and unworkable until removed.

Reading guide

The teaching in one sentence

Just as gold corrupted by iron, copper, tin, lead, or silver is brittle and unworkable, a mind corrupted by sensual desire, ill will, dullness and drowsiness, restlessness and remorse, or doubt is not rightly immersed for the ending of defilements; free of these five, the mind becomes pliable, workable, and capable of realizing whatever it turns toward.

The five hindrances, under a different name

Kāmacchando, byāpādo, thinamiddhaṁ, uddhaccakukkuccaṁ, vicikicchā is the identical five-item list the tradition elsewhere calls the nīvaraṇa, hindrances — a list important enough to eventually give its own chapter, later in this nipāta, its name. Here they are called upakkilesa, corruptions, and framed through a craftsman's image rather than the more common metaphor of obstruction. Both labels point at the same five states; a reader should not expect the vocabulary to stay fixed across the whole collection.

The gold simile, read closely

The simile is precise about what corruption costs: gold that is corrupted is na mudu, not pliable; na kammaniya, not workable; na pabhassara, not radiant; and pabhaṅgu, brittle. Four distinct losses, not one vague deficiency. Purified, the same four qualities return in reverse, and only then can a goldsmith make whatever ornament they choose — a ring, earrings, a necklace, a garland. The simile’s point is not that impure gold is worthless but that it cannot yet be shaped into anything in particular.

What purification makes possible

The discourse then lists, at real length, what becomes available to a mind freed of the five corruptions: the various psychic powers, clairaudience, reading others' minds, recollecting past lives in detail, clairvoyance into others' rebirths according to their deeds, and finally the ending of defilements. This is an unusually long list for a discourse this size, and it is close to word-for-word what appears already at the legacy page AN 5.28, this vagga's own namesake discourse. The two texts are not identical, but they draw on the same standard formula for what a purified, immersed mind is said to be capable of.

What this discourse does not claim

Notably, the discourse does not present the psychic powers or the recollection of past lives as ends in themselves, or even discuss them individually beyond naming each in the standard formula. Every item in the list is introduced with the same conditional, if you wish, and closed with the same refrain, you're capable of realizing it, since each and every one is within range. The claim is about capability opened up by purification, not about any one ability being recommended for its own sake.

Key terms

upakkilesa — “corruption” — this discourse's word for what elsewhere in the canon is called nīvaraṇa, hindrance; the same five states under a different label.
jātarūpa — “native gold” — unrefined gold as it occurs naturally, the material the simile's corruptions afflict.
thinamiddha — “dullness and drowsiness” — the third of the five mental corruptions, paired as a single compound term throughout the canon.
uddhaccakukkucca — “restlessness and remorse” — the fourth, likewise a fixed compound pairing two related mental states.
abhiññā — “direct knowledge, superhuman ability” — the general term for the capacities this discourse lists as available once the mind is purified.

The text

The discourse in full: the gold simile, its application to the mind's five corruptions, and the extended list of what a purified mind can realize. Translation: Bhikkhu Sujato (CC0, SuttaCentral).

Corruptions of gold

§1“Mendicants, there are these five corruptions of native gold. When native gold is corrupted by these it’s not pliable, workable, or radiant, but is brittle and not completely ready for working. What five? Iron, copper, tin, lead, and silver. When native gold is corrupted by these five corruptions it’s not pliable, workable, or radiant, but is brittle and not completely ready for working. But when native gold is free of these five corruptions it becomes pliable, workable, and radiant, not brittle, and ready to be worked. Then the goldsmith can successfully create any kind of ornament they want, whether a ring, earrings, a necklace, or a golden garland.

Corruptions of the mind

§2In the same way, there are these five corruptions of the mind. When the mind is corrupted by these it’s not pliable, workable, or radiant. It’s brittle, and not rightly immersed in samādhi for the ending of defilements. What five? Sensual desire, ill will, dullness and drowsiness, restlessness and remorse, and doubt. These are the five corruptions of the mind. When the mind is corrupted by these it’s not pliable, workable, or radiant. It’s brittle, and not rightly immersed in samādhi for the ending of defilements.

§3But when the mind is free of these five corruptions it’s pliable, workable, and radiant. It’s not brittle, and is rightly immersed in samādhi for the ending of defilements. You become capable of realizing anything that can be realized by insight to which you extend the mind, since each and every one is within range.

Psychic power

§4If you wish: ‘May I wield the many kinds of psychic power—multiplying myself and becoming one again; materializing and dematerializing; going unobstructed through a wall, a rampart, or a mountain as if through space; diving in and out of the earth as if it were water; walking on water as if it were earth; flying cross-legged through the sky like a bird; touching and stroking with the hand the sun and moon, so mighty and powerful, controlling the body as far as the realm of divinity.’ You’re capable of realizing it, since each and every one is within range.

Clairaudience

§5If you wish: ‘With clairaudience that is purified and superhuman, may I hear both kinds of sounds, human and heavenly, whether near or far.’ You’re capable of realizing it, since each and every one is within range.

Reading minds

§6If you wish: ‘May I understand the minds of other beings and individuals, having encompassed them with my mind. May I understand mind with greed as “mind with greed”, and mind without greed as “mind without greed”; mind with hate as “mind with hate”, and mind without hate as “mind without hate”; mind with delusion as “mind with delusion”, and mind without delusion as “mind without delusion”; constricted mind as “constricted mind”, and scattered mind as “scattered mind”; expansive mind as “expansive mind”, and unexpansive mind as “unexpansive mind”; mind that is not supreme as “mind that is not supreme”, and mind that is supreme as “mind that is supreme”; mind immersed in samādhi as “mind immersed in samādhi”, and mind not immersed in samādhi as “mind not immersed in samādhi”; freed mind as “freed mind”, and unfreed mind as “unfreed mind”.’ You’re capable of realizing it, since each and every one is within range.

Past lives

§7If you wish: ‘May I recollect many kinds of past lives. That is: one, two, three, four, five, ten, twenty, thirty, forty, fifty, a hundred, a thousand, a hundred thousand rebirths; many eons of the world contracting, many eons of the world expanding, many eons of the world contracting and expanding. May I remember: “There, I was named this, my clan was that, I looked like this, and that was my food. This was how I felt pleasure and pain, and that was how my life ended. When I passed away from that place I was reborn somewhere else. There, too, I was named this, my clan was that, I looked like this, and that was my food. This was how I felt pleasure and pain, and that was how my life ended. When I passed away from that place I was reborn here.” May I recollect my many past lives, with features and details.’ You’re capable of realizing it, since each and every one is within range.

Clairvoyance

§8If you wish: ‘With clairvoyance that is purified and superhuman, may I see sentient beings passing away and being reborn—inferior and superior, beautiful and ugly, in a good place or a bad place—and understand how sentient beings pass on according to their deeds: “These dear beings did bad things by way of body, speech, and mind. They denounced the noble ones; they had wrong view; and they chose to act out of that wrong view. When their body breaks up, after death, they’re reborn in a place of loss, a bad place, the underworld, hell. These dear beings, however, did good things by way of body, speech, and mind. They never denounced the noble ones; they had right view; and they chose to act out of that right view. When their body breaks up, after death, they’re reborn in a good place, a heavenly realm.” And so, with clairvoyance that is purified and superhuman, may I see sentient beings passing away and being reborn—inferior and superior, beautiful and ugly, in a good place or a bad place. And may I understand how sentient beings pass on according to their deeds.’ You’re capable of realizing it, since each and every one is within range.

The ending of defilements

§9If you wish: ‘May I realize the undefiled freedom of heart and freedom by wisdom in this very life, and live having realized it with my own insight due to the ending of defilements.’ You’re capable of realizing it, since each and every one is within range.”

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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 five items does the mind-corruption half of this discourse name?
Correct: B. The nīvaraṇa, here called upakkilesa, corruptions, for the first time by name in the Fives.
Question 2 of 10
What word does this discourse use for the hindrances, instead of 'nīvaraṇa'?
Correct: B. The same five states, framed through a metalworking image rather than the more common obstruction metaphor.
Question 3 of 10
What four qualities does corrupted gold lack, according to the simile?
Correct: B. Four distinct losses named precisely, not one vague deficiency.
Question 4 of 10
What does the goldsmith do once the gold is purified?
Correct: B. Purity opens up the capacity to be shaped into anything in particular.
Question 5 of 10
What does the guide note about the extended abhiññā list closing this discourse?
Correct: B. The same standard formula drawn on by this vagga's own namesake discourse.
Question 6 of 10
How is each ability in the extended list introduced and closed?
Correct: B. A consistent pattern across every item in the list.
Question 7 of 10
According to the guide, does this discourse recommend the psychic powers as ends in themselves?
Correct: B. Introduced conditionally, as what becomes available, not what must be sought.
Question 8 of 10
What later chapter of this nipāta does the guide say the hindrances will eventually give its name to?
Correct: B. A forward-pointing note the guide will confirm when that chapter arrives.
Question 9 of 10
How many of the six standard superhuman abilities does the extended list name?
Correct: B. The complete standard set, given at real length for a discourse this size.
Question 10 of 10
Where is AN 5.23 set?
Correct: B. Consistent with the pattern across this nipāta so far.
Answered 0 of 10 · Correct 0