佛說目連問戒律中五百輕重事經 2.128

2.128

問：「比丘捨道還俗，後更出家。前師故是師非？」答：「非是。」

Question: "If a bhikṣu renounces the Path and returns to lay life, but later goes forth again, is his former master still his master, or not?" Answer: "He is not."