E Sa`d-ud-Din (d.
Of Sa`d-ud-Din's successors in the office of imperial historiographer the most remarkable for literary power is Na`ima.
822) and the important Book of Classes of his disciple Ibn Sa`d (q.v.).
Apart from this his chief merits lie in his studies on the subject of the traditional authorities, the results of which are given by Ibn Sa`d, and in his chronology, which is often excellent.
- Be fore his death Omar had nominated six of the leading Mohajir (Emigrants) who should choose the caliph from among themselves - Othman, Ali, Zobair, Talha, Sa`d b.
On the 8th of Dhu'l-Hijja Hosain set out from Mecca with all his family, expecting to be received with enthusiasm by the citizens of Kuf a, but on his arrival at Kerbela west of the Euphrates, he was confronted by an army sent by Obaidallah under the command of Omar, son of the famous Sa`d b.
Sa`d and his officers, Obaidallah and even Yazid came to be regarded as murderers, and their names have ever since been held accursed by all Shiites.