佛說目連問戒律中五百輕重事經 2.169

2.169

問：「沙彌叛師，以白衣師綜習俗，竟不捨。或經年月，還來投師。故是沙彌非？但悔過而已，不須更受戒耶？」答：「故是沙彌，但向師懺。本不捨戒不得更受，受亦不得戒。」

Question: "If a śrāmaṇera rebels against his master, takes a layperson as master to practice secular customs, but never formally renounces his precepts, and after months or years returns to take refuge in his master, is he still a śrāmaṇera or not? Does he merely repent his transgression, with no need to receive the precepts again?" Answer: "He is still a śrāmaṇera; he need only repent before his master. Since he originally did not renounce the precepts, he cannot receive them again; even if he were to receive them, he would not obtain the precepts."