In Islam , one of two early religious groups.
The term applies primarily to members of a theological school that flourished in Al- Baghdad in the 8th–10th century. These Muʽtazilah were the first Muslims to employ systematically the categories and methods of Hellenistic philosophy to derive their dogma. The tenets of their faith included belief in the oneness of God ( tawḥīd ), advocation of human free will (the ability to choose between good and evil), and the fundamental belief in God's fairness (i.e., God will punish only those deserving of punishment). Their doctrine of a created Qurān (the eternal nature of which was advocated by their opponents) held sway in the caliphal court briefly in the early 9th century and was the first instance in the Muslim world in which political authorities attempted to enforce any form of doctrinal rigour; the Muʽtazilah theological program soon lost political sway, however, and had faded by the 13th century. Though it was ultimately abandoned by Sunnite Muslims (the group's methods came to be accepted by some Shīite groups), its true importance lay in the fact that it forced other theological groups to embrace a more rigorous dialectical method (see {{link=kalam">kalām ).