(3LhdI JGQjNjI aj YUQ GdNdaGA GdQGTOjf (B:s (3OQGSI hUajI JMdjdjI dCMOGK Jdc GdaJQI (B/s - (3Gdhcjd, eMeO GdSjOs (Jeddah : Dar al-Mujtama', 1997)
Keywords: Caliphate -- History; Islamic Empire -- History -- 622-661