When Ameerul Momineen appointed Muhammad ibn Abi Bakr  Governor of Egypt and he was overpowered and killed, Ameerul Momineen said:

I had intended to send Hashim ibn `Utbah to Egypt and had l done so he would have made way for the opponents nor given them time (to get hold of him). This is without reproach to Muhammad ibn Abi Bakr as I loved him and had brought him up.