It has been narrated on the authority of Anas that the Prophet ﷺ of Allah ﷺ wrote to Chosroes (King of Persia), Caesar (Emperor of Rome), Negus (King of Abyssinia) and every (other) despot inviting them to Allah, the Exalted. And this Negus was not the one for whom the Messenger of Allah ﷺ had said the funeral prayers.