(41) باب فِي الأَذَانِ قَبْلَ دُخُولِ الْوَقْتِ
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 mu'adhdhin of 'Umar, named Mas'ud. He then narrated the rest of the tradition. This version is more correct than that one.
Reference: Sunan Abi Dawud 532
In-book reference: Book 2, Hadith 142
English translation: Book 2, Hadith 532