It is narrated from Sayyiduna Abu Hurairah, may Allah be pleased with him, that the Noble Prophet, peace and blessings be upon him, said: When the Imam says {غَیْرِالْمَغْضُوْبِعَلَیْہِمْوَلَاالْضَّالِّیْنَ}, then you should say Ameen, because the angels also say Ameen, and the Imam also says Ameen. So, whoever’s saying Ameen coincides with the angels’ saying Ameen, his previous sins will be forgiven.
Hadith Referenceالفتح الربانی / أبواب صفة الصلاة / 1592
Hadith Gradingمحدثین:صحیح
Hadith Takhrij«أخرجه البخاري: 780، ومسلم: 410 ، (انظر مسند أحمد ترقيم الرسالة: 7187، 9921 ترقیم بيت الأفكار الدولية: 7187»