al-Qadir bi-llah Ahmad ibn Ishaq ibn al-Muqtadir

Abbasid caliph [381–422], Abu'l-Abbas Ahmad ibn Ishaq ibn al-Muqtadir, born 336; hailed after al-Ta'i's deposition, arriving 10 Ramadan. Al-Khatib: famed for piety and night-prayer, he studied fiqh under Abu Bishr al-Harawi and wrote an usul book — Companions' virtues and takfir of the Mu'tazila — read every Friday at al-Mahdi's mosque; in Shawwal he and Baha' al-Dawla swore mutual fidelity, the caliph granting him all beyond his gate.

Reign · Abbasid Caliphate · no. 37 in the chain · 991–1031 CE

Ruled the caliphate

Events of the reign

The museum record for this caliph