Majjhima Nikaya 3:127
SUJATOYasmiṁ samaye, bhikkhave, bhikkhuno taṁ dhammaṁ paññāya pavicinato pavicayato parivīmaṁsaṁ āpajjato āraddhaṁ hoti vīriyaṁ asallīnaṁ, vīriyasambojjhaṅgo tasmiṁ samaye bhikkhuno āraddho hoti, vīriyasambojjhaṅgaṁ tasmiṁ samaye bhikkhu bhāveti, vīriyasambojjhaṅgo tasmiṁ samaye bhikkhuno bhāvanāpāripūriṁ gacchati.
energy …