In _Yemen_ peace was not so easily restored. The false prophet Aswad (it will be recollected) was assassinated by three of his courtiers, who, at the bidding of Mahomet, conspired with his wife against him.[79] [Sidenote: Confusion in Yemen following the assassination of Aswad.]These were the Arab chief Cays ibn Abd Yaghûth, commander of his army, and the two ministers, of Persian descent, Feroze and Dâdweih, who thereupon succeeded to the government at Sanâa.[80] When tidings of these events reached Medîna just after Mahomet’s death, Abu Bekr appointed Feroze to be his lieutenant, with Cays and Dâdweih to help him. The Arab blood of Cays rebelled against serving under a foreigner, and he plotted to expel the whole Persian race. The princes of Himyar, however, Dzul Kelâa and others,[81] would not help him, and he was obliged to call in the aid of the brigand Amr ibn Mádekerib and his marauding bands. Dâdweih was treacherously slain by Amr at a feast, but Feroze escaped, and after much hardship, secured his retreat with a friendly tribe in the hills of Khaulân. For a time Cays carried all before him. The family of Feroze was taken captive, and the Persian settlers, pursued in every direction, fled to the mountains, or took ship from Aden. Feroze appealed for help to the Caliph; but it was long before he had any troops to send. So Feroze cast about for himself, and at length, by the aid of some loyal tribes, put the troops of Cays to flight, regained possession of his family and reoccupied Sanâa.[82] [Sidenote: Mohâjir marches from Medîna upon Yemen. End of A.H. XI. Spring, A.D. 633.]