The Call to Prayer and the Establishment of Prayer and the Reward of the Muezzins

The Messenger of Allah صلى الله عليه وعلى آله وسلم and his family, would say in the adhan, "I testify that I am the Messenger of Allah صلى الله عليه وعلى آله وسلم." He also said: "I testify that Muhammad is the Messenger of Allah صلى الله عليه وعلى آله وسلم," as both versions have been narrated. The Messenger had two muezzins: Bilal and Ibn Umm Maktum, the latter of whom was blind and would call the adhan before dawn.