EntityQ3778593· pop 15· linked from 199 articlesFourth FitnaSign in to saveconflict (811–813) between the brothers al-Amin and al-Ma'mun over the succession to the throne of the Abbasid Caliphate; provincial turmoil continued until the 830sConnectionsKhorasanEntityShia IslamConceptAbbasid CaliphateEntityUmayyad CaliphateEntityTahirid dynastyEntityAbbasid RevolutionEntityBarmakidsEntityAlidsEntityTahir ibn HusaynEntityKhurramitesEntityAbdallah ibn Tahir al-KhurasaniEntityAl-'AwasimEntityMuhammad ibn Ja'far al-SadiqEntityEgyptCountryIranCountryIraqCountrySyriaCountryYemenCountryMuhammadPersonQur’anEntityCategories810s conflicts810s in the Abbasid Caliphate820s conflicts830s conflicts830s in the Abbasid Caliphate9th century in IranFourth FitnaIraq under the Abbasid CaliphateKhurasan under the Abbasid CaliphateWars of succession involving the states and peoples of AfricaWars of succession involving the states and peoples of Asia