五分比丘尼戒本 1.9

1.9

"Whatever bhikṣuṇī, who trains in the rules of śīla together with the bhikṣuṇīs, fails to give up the training when the śīla is weak, and engages in sexual intercourse as she pleases, even with an animal, that bhikṣuṇī incurs a pārājika and is in non-communion.