俱舍論頌疏論本 18.33

18.33

問：「父母形轉，殺成逆耶？」答：「頌言『轉形亦成逆』，以依止身一故，殺必成逆。」

Question: "If the parents' gender changes, does killing them constitute an act of immediate retribution?" Answer: "The verse says: 'changing gender also constitutes the immediate sin'; because the physical body upon which they rely is one and the same, killing them must constitute an act of immediate retribution."