佛說目連問戒律中五百輕重事經 2.159

2.159

問：「犯五戒不悔，得受十戒不？」答：「不得。若先不知，悔已受。而不悔，不得。」

Question: "If one has violated the five precepts and not repented, may one receive the ten precepts?" Answer: "One may not. If one previously did not know, one may receive them after repenting; but without repenting, one may not."