[415] How does one train thus: "Liberating the mind (citta), I shall breathe out"; how does one train thus: "Liberating the mind, I shall breathe in"?
One trains thus: "Liberating the mind from lust (rāga), I shall breathe out"; one trains thus: "Liberating the mind from lust, I shall breathe in." One trains thus: "Liberating the mind from hatred, I shall breathe out"; one trains thus: "Liberating the mind from hatred, I shall breathe in." One trains thus: "Liberating the mind from delusion, I shall breathe out"; one trains thus: "Liberating the mind from delusion, I shall breathe in." … Liberating the mind from conceit (māna); liberating the mind from view (diṭṭhi); liberating the mind from doubt; liberating the mind from dullness and drowsiness; liberating the mind from restlessness; liberating the mind from shamelessness (ahirika); one trains thus: "Liberating the mind from lack of moral dread (anottappa), I shall breathe out"; one trains thus: "Liberating the mind from lack of moral dread, I shall breathe in." By way of the out-breaths and in-breaths while liberating the mind, there is the mind that is consciousness (viññāṇacitta); its establishment (upaṭṭhāna) is mindfulness …
"He contemplates": how does he contemplate that mind? … Thus he contemplates that mind.
"Development (bhāvanā)": there are four kinds of development … development in the sense of repeated cultivation. The out-breaths and in-breaths while liberating the mind are purity of morality (sīlavisuddhi) in the sense of restraint … For one who knows the one-pointedness of mind and non-distraction by way of the out-breaths and in-breaths while liberating the mind … knowing this, he brings the faculties (indriya) together; therefore it is said, "and he penetrates the meaning of peace." There are eight knowledges (ñāṇa) of contemplation, eight establishments with recollection, and four sutta-based groundings, in the contemplation of mind in the mind.
English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.