Trung Bộ Kinh (Majjhima Nikaya) 3:125
SUJATOYasmiṁ samaye, bhikkhave, bhikkhuno upaṭṭhitā sati hoti asammuṭṭhā, satisambojjhaṅgo tasmiṁ samaye bhikkhuno āraddho hoti, satisambojjhaṅgaṁ tasmiṁ samaye bhikkhu bhāveti, satisambojjhaṅgo tasmiṁ samaye bhikkhuno bhāvanāpāripūriṁ gacchati.
At such a time, a mendicant has activated the awakening factor of mindfulness …