僧羯磨 1.128

1.128

"You must not intentionally deprive any sentient being of life, down to even an ant. If a bhikṣu intentionally deprives a human being of life with his own hand, seeks a weapon and hands it to a person, teaches dying, praises dying, encourages dying, gives someone a harmful drug, or causes an abortion or kills by sorcery and incantation, whether making the expedients himself or instructing another to make them, he is no longer a śramaṇa, nor a son of the Śākya. The author of the simile says: Just like a needle whose eye is broken, which can no longer be used; so too is a bhikṣu: after violating a pārājika dharma, he never again restores his conduct as a bhikṣu. In this you must not engage for the rest of your life. Can you maintain this?" (He answers, saying:) "I can."