And the Messenger of Allah, peace and blessings be upon him, said: "Kisra, that is, the king of Persia, will be destroyed. After him, there will be no (other) Kisra. (Similarly) Caesar, that is, the king of Rome, will also be destroyed. After him, there will be no other Caesar. And surely you will spend the treasures of both of them in the way of Allah." And the Prophet, peace and blessings be upon him, described war as deception.