(34) باب الأَمْرِ بِالتَّأْمِينِ خَلْفَ الإِمَامِ
It was narrated that Abu Hurairah, may Allah be pleased with him, that:
The Messenger of Allah (ﷺ) said: "When the Imam says: Not (the way) of those who earned Your anger, nor of those who went astray, say: 'Amin,' for if a person's Amin coincides with the Amin of the angels, his previous sins will be forgiven.'" (RU)
Reference (RU): Sunan an-Nasa'i 929 (RU)
In-book reference (RU): Book 11, Hadith 54 (RU)
English translation (RU): Vol. 2, Book 11, Hadith 930 (RU)