Black Standard

The Black Banner or Black Standard, also known as the Banner of the Eagle or simply as The Banner is one of the Islamic flags flown by the Islamic prophet Muhammad according to Muslim tradition. It was historically used by Abu Muslim in his uprising leading to the Abbasid Revolution in 747 and is therefore associated with the Abbasid Caliphate in particular. It is also a symbol in Islamic eschatology, though this tradition is weak according to hadithic standards.