[131] "Rāhula, whatever action you wish to do with the mind, you should reflect upon that very mental action (manokamma) thus: 'This action that I wish to do with the mind — would this mental action of mine lead to the affliction of myself, lead to the affliction of others, or lead to the affliction of both? Is this mental action unwholesome (akusala), having suffering (dukkha) as its outcome, suffering as its result?' If, Rāhula, when reflecting, you should know thus: 'This action that I wish to do with the mind — this mental action of mine would lead to the affliction of myself, would lead to the affliction of others, would lead to the affliction of both; this mental action is unwholesome, having suffering as its outcome, suffering as its result,' then, Rāhula, an action with the mind of such a kind should by all means not be done by you. But if, Rāhula, when reflecting, you should know thus: 'This action that I wish to do with the mind — this mental action of mine would not lead to the affliction of myself, nor would it lead to the affliction of others, nor would it lead to the affliction of both; this mental action is wholesome (kusala), having happiness as its outcome, happiness as its result,' then, Rāhula, an action with the mind of such a kind should be done by you.
"Also while you are doing an action with the mind, Rāhula, you should reflect upon that very mental action thus: 'This action that I am doing with the mind — does this mental action of mine lead to the affliction of myself, lead to the affliction of others, or lead to the affliction of both? Is this mental action unwholesome, having suffering as its outcome, suffering as its result?' If, Rāhula, when reflecting, you should know thus: 'This action that I am doing with the mind — this mental action of mine leads to the affliction of myself, leads to the affliction of others, leads to the affliction of both; this mental action is unwholesome, having suffering as its outcome, suffering as its result,' then, Rāhula, you should desist from a mental action of such a kind. But if, Rāhula, when reflecting, you should know thus: 'This action that I am doing with the mind — this mental action of mine does not lead to the affliction of myself, nor does it lead to the affliction of others, nor does it lead to the affliction of both; this mental action is wholesome, having happiness as its outcome, happiness as its result,' then, Rāhula, you should continue with a mental action of such a kind.
"Also having done an action with the mind, Rāhula, you should reflect upon that very mental action thus: 'This action that I have done with the mind — does this mental action of mine lead to the affliction of myself, lead to the affliction of others, or lead to the affliction of both? Is this mental action unwholesome, having suffering as its outcome, suffering as its result?' If, Rāhula, when reflecting, you should know thus: 'This action that I have done with the mind — this mental action of mine leads to the affliction of myself, leads to the affliction of others, leads to the affliction of both; this mental action is unwholesome, having suffering as its outcome, suffering as its result,' then, Rāhula, regarding a mental action of such a kind you should be troubled, ashamed, and disgusted; and being troubled, ashamed, and disgusted, you should undertake restraint for the future. But if, Rāhula, when reflecting, you should know thus: 'This action that I have done with the mind — this mental action of mine does not lead to the affliction of myself, nor does it lead to the affliction of others, nor does it lead to the affliction of both; this mental action is wholesome, having happiness as its outcome, happiness as its result,' then for that very reason, Rāhula, you should dwell in rapture (pīti) and gladness, training day and night in wholesome dhammas."
English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.