(18) باب التَّسْمِيعِ وَالتَّحْمِيدِ وَالتَّأْمِينِ
Abu Huraira reported:
The Messenger of Allah (ﷺ) said: SayAmin when the Imam says Amin, for it anyone's utterance of Amin synchronises with that of the angels, he will be forgiven his past sins. (AR)
Reference (AR): Sahih Muslim 410 a (AR)
In-book reference (AR): Book 4, Hadith 77 (AR)
USC-MSA web (English) reference(deprecated numbering scheme): Book 4, Hadith 811 (AR)