Abū Ḥātim al-Rāzī, Aḥmad b. Ḥamdān b. Aḥmad (d. 322/934), was a great Persian scholar, author and Ismaili dāʿī (missionary). Ibn Ḥajar (1/164) calls him ‘al-Laythī’, although the reason for this nisba is not clear (see Abū Ḥātim, al-Zīna, 1/26). The same applies to the nisba ‘al-Kilābī’, which was attributed to him by al-Qāḍī ʿAbd al-Jabbār (p. 165). Ibn al-Nadīm (pp. 188, 189) and Abū al-Qāsim Kāshānī (q.v.) refer to him as Abū Ḥātim b. ʿAbdān al-Rāzī al-Warsanānī. According to Yāqūt (4/921), Warsanān was a small village near Samarqand. Kh^wāja…