Ṭabarī, ʻAlī ibn Sahl Rabbān, active 9th century. Dīn wa-al-dawlah. English

The Book of religion and empire : a semi-official defence and exposition of Islam written by order at the court and with the assistance of the Caliph Mutawakkil (A.D. 847-861) by ʻAli Tabari / by ʻAlī Ṭabarī ; translated with a critical apparatus from an apparently unique ms. in the John Rylands Library by A. Mingana.