Abu Hatim Ahmad ibn Hamdan al-Razi

Abū Ḥātim Aḥmad ibn Ḥamdān al-Rāzī was a Persian Ismaili philosopher of the 9th century, who died in 322 AH (935 CE). He was also the Da'i al-du'at (chief missionary) of Ray and the leader of the Ismaili da'wah in Central Persia.

Life
He was born in Rayy near modern Tehran. He was a contemporary of Muhammad ibn Zakariya al-Razi and engaged in debates with him.

Works

 * Al-Jāmiʿ, a book on jurisprudence.
 * Kitāb aʿlām al-nubuwwa (The Proofs of Prophecy), a refutation of Abū Bakr al-Rāzī.
 * Kitāb al-Iṣlāḥ (Book of the Correction), “the oldest extant Ismāʾilī work presenting a Neoplatonic world-view.” Written as a corrective to the views of his contemporary Muḥammad ibn Aḥmad al-Nasafī.
 * Kitāb al-Zīna (Book of the Ornament), on the superiority of the Arabic language and on religious terminology.