When Amir al-mu'minin appointed Muhammad ibn Abi Bakr1 Governor of Egypt and he was overpowered and killed, Amir al-mu'minin said:
(1) Al-Thaqafi, al-Gharat;
(2) al-Tabari, Ta'rikh, VI, 63 (events of the year 36);
(3) al-Baladhuri, Ansab, II, 404.