The principle of abrogation (without its "naskh" terminology) makes an early appearance in the "Muwatta"' of Mālik (d.179 AH/795 ) according to John Burton and Ahmad Hasan. At one point Malik notes that "his teacher Zuhrī had told him that the Muslims had adopted as standard the latest of all the Prophet's reported actions" when there is a conflict. In another chapter Mālik states that of the two conflicting Qur'an rulings, "one had replaced the other". Elsewhere, Mālik "rejects the notion that a ruling remains valid despite the withdrawal" of the (supposed) Qur'an verse the ruling is based on.