At Kapilavatthu. Seated to one side, the Buddha said to Nandiya the Sakyan: “Nandiya, a noble disciple who has four things is a stream-enterer, not liable to be reborn in the underworld, assured, destined 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, assured, destined for awakening.”