Majjhima Nikaya 3:130
SUJATOYasmiṁ samaye, bhikkhave, bhikkhuno passaddhakāyassa sukhino cittaṁ samādhiyati, samādhisambojjhaṅgo tasmiṁ samaye bhikkhuno āraddho hoti, samādhisambojjhaṅgaṁ tasmiṁ samaye bhikkhu bhāveti, samādhisambojjhaṅgo tasmiṁ samaye bhikkhuno bhāvanāpāripūriṁ gacchati.
immersion …