맛지마 니카야 5:243
SUJATOIdha, bhikkhave, bhikkhuno avijjā pahīnā hoti, ucchinnamūlā tālāvatthukatā anabhāvaṅkatā, āyatiṁ anuppādadhammā.
It’s when a mendicant has given up ignorance, cut it off at the root, made it like a palm stump, obliterated it, so it’s unable to arise in the future.