Sunan an-Nasa'i 645
سنن النسائي#645SahihIt was narrated from Abu Hurairah, who heard it from the mouth of the Messenger of Allah (S.A.W):"The Mu'adhdhin will be forgiven as far as his voice reaches, and every wet and dry thing will bear witness for him
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Abu GhuddahSahih
Al-AlbaniSahih
Zubair Ali ZaiIsnaad Hasan
In-book reference: 7:20