Inquisition

Ahmad ibn Hanbal (780–855 CE) founded the Hanbali school of jurisprudence and compiled the Musnad, one of the largest hadith collections. His refusal to affirm the doctrine of the created Quran during the Mihna made him the symbol of scholarly independence from political power.

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.