[561] Bhikkhus, there are these three purities (soceyya). What three? Purity of body, purity of speech, purity of mind.
And what, bhikkhus, is purity of body? Here, bhikkhus, a bhikkhu abstains from the destruction of life, abstains from taking what is not given, abstains from unchastity. This, bhikkhus, is called purity of body.
And what, bhikkhus, is purity of speech? Here, bhikkhus, a bhikkhu abstains from false speech, abstains from divisive speech, abstains from harsh speech, abstains from frivolous talk. This, bhikkhus, is called purity of speech.
And what, bhikkhus, is purity of mind? Here, bhikkhus, when there is sensual desire within him, a bhikkhu understands: 'There is sensual desire within me'; or when there is no sensual desire within him, he understands: 'There is no sensual desire within me'; and he understands how the arising of unarisen sensual desire comes to be, and he understands how the abandonment of arisen sensual desire comes to be, and he understands how the future non-arising of abandoned sensual desire comes to be. When there is ill will within him, he understands: 'There is ill will within me'; or when there is no ill will within him, he understands: 'There is no ill will within me'; and he understands how the arising of unarisen ill will comes to be, and he understands how the abandonment of arisen ill will comes to be, and he understands how the future non-arising of abandoned ill will comes to be. When there is dullness and drowsiness within him, he understands: 'There is dullness and drowsiness within me'; or when there is no dullness and drowsiness within him, he understands: 'There is no dullness and drowsiness within me'; and he understands how the arising of unarisen dullness and drowsiness comes to be, and he understands how the abandonment of arisen dullness and drowsiness comes to be, and he understands how the future non-arising of abandoned dullness and drowsiness comes to be. When there is restlessness and remorse within him, he understands: 'There is restlessness and remorse within me'; or when there is no restlessness and remorse within him, he understands: 'There is no restlessness and remorse within me'; and he understands how the arising of unarisen restlessness and remorse comes to be, and he understands how the abandonment of arisen restlessness and remorse comes to be, and he understands how the future non-arising of abandoned restlessness and remorse comes to be. When there is doubt within him, he understands: 'There is doubt within me'; or when there is no doubt within him, he understands: 'There is no doubt within me'; and he understands how the arising of unarisen doubt comes to be, and he understands how the abandonment of arisen doubt comes to be, and he understands how the future non-arising of abandoned doubt comes to be. This, bhikkhus, is called purity of mind.
These, bhikkhus, are the three purities.
One pure in body, pure in speech,
pure in mind, without taints (āsava),
pure, accomplished in purity —
him they call one who has washed away evil.
English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.