佛說目連問戒律中五百輕重事經 2.118

2.118

問：「比丘知其父母兄弟破落屬人，而不購贖，有罪不？」答：「若為行道不贖，無罪。」

Question: "If a bhikṣu knows that his parents or brothers have fallen into ruin and become bound to others, yet does not ransom them, is he guilty of an offense?" Answer: "If it is for the sake of practicing the Path that he does not ransom them, he is without offense."