สุทธิกสูตร
[1309] Ānāpānassati bhikkhave bhāvitā bahulīkatā mahapphalā hoti mahānisaṃsā.
[1310] Kathaṃ bhāvitā ca bhikkhave ānāpānassati kathaṃ bahulīkatā mahapphalā hoti mahānisaṃsā . idha bhikkhave bhikkhu araññagato vā rukkhamūlagato vā suññāgāragato vā nisīdati pallaṅkaṃ ābhujitvā ujuṃ kāyaṃ paṇidhāya parimukhaṃ satiṃ upaṭṭhapetvā . so satova assasati sato passasati (vitthāretabbā yāva paṭinissaggānupassī assasissāmīti sikkhati paṭinissaggānupassī passasissāmīti sikkhati) . evaṃ bhāvitā kho bhikkhave ānāpānassati evaṃ bahulīkatā mahapphalā hoti mahānisaṃsāti.