The Messenger of Allah ﷺ said, "The caller to prayer is forgiven to the extent of his voice's reach, and every moist and dry thing bears witness for him. The one who attends the prayer has twenty-five rewards recorded for him, and what is between the two prayers is expiated for him."
حدثنا عبد الرحمن قال حدثنا شعبة عن موسى بن أبي عثمان قال سمعت أبا يحيى يحدث
قال رسول الله ﷺ يغفر للمؤذن مد صوته ويشهد له كل رطب ويابس وشاهد الصلاة يكتب له خمس وعشرون ويكفر عنه ما بينهما