佛說目連問戒律中五百輕重事經 2.144

2.144

問：「先受三歸犯不悔，得更受不？」答：「不得，要當悔。若欲當受，捨先所受。若不捨，更受者不得。」

Question: "If one previously received the Three Refuges, violated them, and did not repent, may one receive them again?" Answer: "One may not; one must repent. If one wishes to receive them, one must renounce what was previously received. If one does not renounce them, one cannot receive them again."