Sayyiduna Abu Humayd Sa'idi رضي الله عنه says: We fought in the battle of Tabuk along with the Messenger of Allah صلى الله عليه وسلم, and the king of Aylah gave the Prophet صلى الله عليه وسلم a white mule, and the Prophet صلى الله عليه وسلم gave him a cloak, and wrote a document for his kingdom in his name, meaning he allowed him to remain the ruler there.