佛說目連問戒律中五百輕重事 1.181

1.181

問：「師徒父母兄弟死，得哭不？」答：「不得，一舉聲犯墮。正可小小泣淚而已。」

Question: "When a master, disciple, parent, or sibling dies, may one weep or not?" Answer: "He may not; raising the voice once, he commits an offence of pātayantika. It is only permissible to shed tears slightly."