English: Map showing the course of the mihnah or Islamic Inquisition, 833-852 AD. Sources were primarily as follows:
Hinds, M. "Mihna". The Encyclopedia of Islam, New Edition, Volume VII: Mif–Naz. Leiden and New York: BRILL, 1993. ISBN90-04-09419-9. pp. 2-6
Hurvitz, Nimrod. The Formation of Hanbalism: Piety into Power. New York: Routledge, 2002. ISBN0-7007-1507-X. pp. 125-27
Melchert, Christopher. "Religious Policies of the Caliphs from al-Mutawakkil to al-Muqtadir: AH 232-295/AD 847-908". Islamic Law and Society 3 (3), 1996. Retrieved March 29, 2016. pp. 320 f..
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