RT AA A1 Walker, Paul E. T1 (Brief Reviews) Proofs of Prophecy and the Refutation of the Ismāʿīliyya: The Kitāb Ithbāt nubuwwat al-nabī by the Zaydī al-Muʾayyad bi-llāh al-Hārūnī (d. 411/1020) by Eva-Maria Lika : by Paul E. Walker