Nyora kupfuurira kweiyi ndima - Mukufunga, al-Mu'tasim akatevera tsoka dzaal-Ma'mun, achiramba achitsigira mutangiri wake Mu'tazilism, dzidziso yechitendero iyo yakaedza kufamba nzira yepakati pakati pehumambo hwenyika uye nzira yechitendero inotsigirwa neAlids nemapoka akasiyana-siyana eShi'ism. Mu'tazilis akatsigira murangariro wokuti Korani yakasikwa uye naizvozvo yakawira muchiremera che"imām" inotungamirirwa naMwari kududzira mukuwirirana nemamiriro ezvinhu anochinja. Nepo vachiremekedza Ali, vakadzivisa kutora chimiro pamusoro pokururama kwamativi anopikisana mukukakavadzana
pakati paAli navapikisi vake. Mu'tazilism yakagamuchirwa zviri pamutemo naal-Ma'mun muna 827, uye muna 833, nguva pfupi asati afa, al-Ma'mun akaita kuti dzidziso dzayo dzive dzokumanikidzirwa, nokugadzwa kwedare rinobvunzurudza, "miḥna". Munguva yekutonga kwemukoma wake, al-Mu'tasim akatamba chinzvimbo chinoshanda mukumanikidza "miḥna" mumatunhu ekumadokero; izvi zvakaramba zvichienderera mushure mekutora kwake chigaro. Mutsigiri mukuru wechiMu'tazilism, mukuru "qādī" Ahmad ibn Abi Duwad, zvimwe ndiye aiva nesimba guru padare ravaKhalifa panguva yose yaitonga al-Mu'tasim.