al-Ḥusayn b. Zikrawayh, Abū al-ʿAbbās (264–291/878–904), one of the leaders of the Qarmaṭī movement in Syria. He also became known as Ṣāḥib al-Shāma or Ṣāḥib al-Khāl which referred to his having a birthmark on his face (Thābit, 19; Ibn al-ʿAdīm, Bughya, 2/926; al-Nuwayrī, 25/249). His name and lineage have also been recorded as Aḥmad b. ʿAbd Allāh b. Muḥammad b. Ismāʿīl b. Jaʿfar al-Ṣādiq (Ibn al-ʿAdīm, Bughya, 2/926; cf. al-Maqrīzī, al-Muqaffā, 3/292), which is said to have been forged by him in order to gain notoriety and respectability by claiming descent from …