See Abulfeda (Annal. Moslem. p. 136-145), Eutychius(Annal. tom. ii. p. 392, vers. Pocock), Elmacin (Hist. Saracen. p. 109 - 121), Abulpharagius, (Hist. Dynast. p. 134-140), Roderic of Toledo (Hist. Arabum, c. xviii. p. 33), Theophanes (Chronograph. p. 356, 357, who speaks of the Abbassides under the names of and ), and the Bibliotheque of D'Herbelot, in the articles Ommiades, Abbassides, Moervan, Ibrahim, Saffah, Abou Moslem.