Narrated Abdullah ibn Umar: Bilal made a call to prayer before the break of dawn; the Prophet ﷺ, therefore, commanded him to return and make a call: Lo! the servant of Allah (i. e. I) had slept (hence this mistake). The version of Musa has the addition: He returned and made a call: Lo! the servant of Allah had slept. Abu Dawud said: This tradition has been narrated by al-Darawardi from Ubaid Allah on the authority of Ibn Umar saying: There was a muadhdhin of Umar, named Masud. He then narrated the rest of the tradition. This version is more correct than that one.