佛說目連問戒律中五百輕重事經 1.115

1.115

問：「若兒前出家，父母後出家，來投其兒，其兒得度不？」答：「得。」

Question: "If a son previously went forth and his parents later go forth and come to take refuge with their son, may the son ordain them?"
Answer: "He may."