Mu'tazila

Al-Ma'mun (r. 813-833 CE) was the seventh Abbasid caliph and one of the most intellectually accomplished rulers in Islamic history. His reign marked the peak of the translation movement and the flourishing of the House of Wisdom in Baghdad, making him a central figure in the Islamic Golden Age.

Predestination (Qadar) is the sixth article of Islamic faith, encompassing divine foreknowledge, the divine decree, and the relationship between God's sovereignty and human responsibility. It drove major early theological debates, producing the Ash'ari and Maturidi Sunni schools.

The Mihna (833–848 CE) was a fifteen-year inquisition begun by Caliph al-Ma'mun to enforce the Mu'tazilite doctrine that the Quran was created. Its failure, symbolized by Ahmad ibn Hanbal's resistance, established the independence of religious scholarship from political authority.