(31) باب رَفْعِ الصَّوْتِ بِالأَذَانِ
Narrated AbuHurayrah:
The Prophet (ﷺ) said: The mu'adhdhin will receive forgiveness to the extent to which his voice reaches, and every moist and dry place will testify on his behalf; and he who attends (the congregation of) prayer will have twenty-five prayers recorded for him and will have expiation for sins committed between every two times of prayer.
Reference: Sunan Abi Dawud 515
In-book reference: Book 2, Hadith 125
English translation: Book 2, Hadith 515