GENEALOGICAL TREE OF THE PROPHET AND OF THE RASHIDIN, 'OMEYYAN AND 'ABBASIDE KHALIFAHS. In Arabia the Seyyids are the descendants of Zain-el-Abidin, the only one of Husein's. children who survived the Battle of Kerbela A.H. 60. (A.D. 680) The Seyyids devote themselves to learning and religion. 3 2 *The Sherils are descendants of Hasan through his two sons Zayd and Hásan-el-Musanna. The Sherifs devote themselves to Government and |