Trung Bộ Kinh (Majjhima Nikaya) 3:54
SUJATOĀnāpānassati, bhikkhave, bhāvitā bahulīkatā cattāro satipaṭṭhāne paripūreti.
Mindfulness of breathing, when developed and cultivated, fulfills the four kinds of mindfulness meditation.
Ānāpānassati, bhikkhave, bhāvitā bahulīkatā cattāro satipaṭṭhāne paripūreti.
Mindfulness of breathing, when developed and cultivated, fulfills the four kinds of mindfulness meditation.