Majjhima Nikaya 5:246
SUJATOIdha, bhikkhave, bhikkhuno ponobbhaviko jātisaṁsāro pahīno hoti, ucchinnamūlo tālāvatthukato anabhāvaṅkato, āyatiṁ anuppādadhammo.
It’s when a mendicant has given up transmigrating through births in future lives, cut it off at the root, made it like a palm stump, obliterated it, so it’s unable to arise in the future.