It is narrated from Abu Hayyan, he says: I heard from an elder in Madinah Munawwarah, he was stating that Sayyiduna Abdullah bin Abi Awfa (may Allah be pleased with him) wrote a letter to Ubaydullah, this was at the time when he wanted to fight the Haruriyyah, that is, the Khawarij. His scribe was my friend. I said to him: Write it for me as well, word for word. He did so. Indeed, the Messenger of Allah (peace and blessings be upon him) said: Do not wish to fight the enemies, and ask Allah for well-being. But when you encounter them, then be patient, and know that Paradise is under the shade of swords. The Prophet (peace and blessings be upon him) would wait until the sun had declined, then he would stand towards the enemy and make this supplication: "O Allah! Revealer of the Book, Mover of the clouds, Defeater of the confederates, defeat them and grant us victory over them."