It was narrated from Al-Bara bin 'Azib that the Prophet of Allah (ﷺ) said:
"Allah and His angels say salah upon the from rows, and the Mu'adhdhin will be forgiven as far as his voice reaches, and whatever hears him, wet or dry, will confirm what he says, and he will have a reward like that of those who pray with him."
English reference: Vol. 1, Book 7, Hadith 647
Arabic reference: Book 7, Hadith 653