At one time the Buddha was staying near Sāvatthī in the Royal Monastery. Then a Saṅgha of a thousand nuns went up to the Buddha, bowed, and stood to one side. The Buddha said to them:

“Nuns, a noble disciple who has four things is a stream-enterer, not liable to be reborn in the underworld, bound for awakening. What four? It’s when a noble disciple has experiential confidence in the Buddha … the teaching … the Saṅgha … And they have the ethical conduct loved by the noble ones … leading to immersion. A noble disciple who has these four things is a stream-enterer, not liable to be reborn in the underworld, bound for awakening.”