“Ānanda, you speak from faith. But the Realized One knows that there’s not even a single mendicant in this Saṅgha who has doubt or uncertainty regarding the Buddha, the teaching, the Saṅgha, the path, or the practice. Even the last of these five hundred mendicants is a stream-enterer, not liable to be reborn in the underworld, assured, destined for awakening.”

Numbered Discourses 4.77 8. Sure Bet Unthinkable

“Mendicants, these four things are unthinkable. They should not be thought about, and anyone who tries to think about them will go mad or get frustrated. What four? The domain of the Buddhas … The domain of one in absorption … The results of deeds … Speculation about the world … These are the four unthinkable things. They should not be thought about, and anyone who tries to think about them will go mad or get frustrated.”

Numbered Discourses 4.78 8. Sure Bet A Religious Donation

“Mendicants, there are these four ways of purifying a religious donation. What four? There’s a religious donation that’s purified by the giver, not the recipient. There’s a religious donation that’s purified by the recipient, not the giver. There’s a religious donation that’s purified by neither the giver nor the recipient. There’s a religious donation that’s purified by both the giver and the recipient.