All as in preceding sutta, with the following addition:

sn.v.314 … "When, bhikkhus, mindfulness of breathing has been developed and cultivated in this way, one of two fruits may be expected: either final knowledge in this very life or, if there is a residue of clinging, the state of nonreturning."

1"Ānāpānassati, bhikkhave, bhāvitā bahulīkatā mahapphalā hoti mahānisaṁsā. Kathaṁ bhāvitā ca, bhikkhave, ānāpānassati kathaṁ bahulīkatā mahapphalā hoti mahānisaṁsā? Idha, bhikkhave, bhikkhu araññagato vā rukkhamūlagato vā suññāgāragato vā nisīdati pallaṅkaṁ ābhujitvā ujuṁ kāyaṁ paṇidhāya parimukhaṁ satiṁ upaṭṭhapetvā. So satova assasati, satova passasati … pe … ‘paṭinissaggānupassī assasissāmī’ti sikkhati, ‘paṭinissaggānupassī passasissāmī’ti sikkhati. Evaṁ bhāvitā kho, bhikkhave, ānāpānassati evaṁ bahulīkatā mahapphalā hoti mahānisaṁsā. Evaṁ bhāvitāya kho, bhikkhave, ānāpānassatiyā evaṁ bahulīkatāya dvinnaṁ phalānaṁ aññataraṁ phalaṁ pāṭikaṅkhaṁ – diṭṭheva dhamme aññā, sati vā upādisese anāgāmitā"ti.

Catutthaṁ.