Arabic Lefends bin Ishak

Of historians in Arab literature there are many, but only the most celebrated will be noted. Muhammad bin Ishak, who died about A.D. 767, produced the best and most trustworthy biography of the prophet Muhammad.
His work was published under the patronage of the Abbaside princes, and was, in fact, composed for the Khalif Al-Mansur (A.D. 754-775). It was used as the chief source of information by Ibn Hisham, the next historian of note, in his life of the Prophet, which work has been edited by Dr. Wustenfeld, and translated into German by Dr. Weil, and into English by Mr. E. Rehatsek, whose manuscript, however, has not yet been printed. Ibn Hisham, who died in A.D. 828, was the father of Arabic genealogy, and Abu-el-Siyadi, who died in A.D. 857, is next to him.