Abu Ya'qub al-Sijistani | |
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Title | Chief da'i of Rayy, Sijistan, and Khurasan |
Personal | |
Died | 971 |
Religion | Isma'ili Shi'a Islam |
Flourished | 930s–971 |
Known for | Introduction of Neoplatonism into Isma'ili theology |
Senior posting | |
Predecessor | Abu Hatim al-Razi (Rayy), Muhammad al-Nasafi (Khurasan) |
Abu Ya'qub Ishaq ibn Ahmad al-Sijistani (Arabic: أبو يعقوب إسحاق بن أحمد السجستاني) or al-Sijzi (السجزي) was a 10th-century Persian Ismaili missionary active in the northern and eastern Iranian lands. His life is obscure, but he was a prolific writer, who played a crucial role in the infusion of Neoplatonic ideas into Isma'ili theology.