Abū Muḥammad ‘Abd al-Ḥaqq al-Islāmī is known for having authored an anti-Jewish polemical pamphlet. The pamphlet, probably written between 1393 and 1396, is extant in four manuscripts, was reproduced twice in lithography as al-Sayf al-Mamdūd fī l-Radd ‘alā Aḥbār al-Yahūd (The Outstretched Sword for Refuting the Rabbis of the Jews), and was edited in 1998 under the same title. In the introduction the author informs us that he was from Ceuta in Morocco, and had converted from Judaism to Islam sixteen years earlier, along with other members of his household. Neither his o…