1.1PTS 5.313“Ānāpānassati, bhikkhave, bhāvitā bahulīkatā mahapphalā hoti mahānisaṁsā.“Mendicants, when mindfulness of breathing is developed and cultivated it’s very fruitful and beneficial.1.2Kathaṁ bhāvitā ca, bhikkhave, ānāpānassati kathaṁ bahulīkatā mahapphalā hoti mahānisaṁsā?And how is mindfulness of breathing developed and cultivated to be very fruitful and beneficial?1.3Idha, bhikkhave, bhikkhu ānāpānassatisahagataṁ satisambojjhaṅgaṁ bhāveti vivekanissitaṁ virāganissitaṁ nirodhanissitaṁ vossaggapariṇāmiṁ,It’s when a mendicant develops mindfulness of breathing together with the awakening factors of mindfulness,1.4ānāpānassatisahagataṁ dhammavicayasambojjhaṅgaṁ bhāveti …pe…investigation of principles, energy, rapture, tranquility, immersion,1.5ānāpānassatisahagataṁ upekkhāsambojjhaṅgaṁ bhāveti vivekanissitaṁ virāganissitaṁ nirodhanissitaṁ vossaggapariṇāmiṁ.and equanimity, which rely on seclusion, fading away, and cessation, and ripen as letting go.1.6Evaṁ bhāvitā kho, bhikkhave, ānāpānassati evaṁ bahulīkatā mahapphalā hoti mahānisaṁsā”ti.Mindfulness of breathing, when developed and cultivated in this way, is very fruitful and beneficial.”

1.7Dutiyaṁ.