(a) It is narrated from Sayyiduna Wa'il bin Hujr (may Allah be pleased with him) that when the Messenger of Allah (peace and blessings be upon him) said Amin, he would raise his voice.
(b) In the narration of al-Sulami it is: I heard the Prophet (peace and blessings be upon him) say: 'Nor of those who go astray' [Surah al-Fatihah: 7]; he would then also say Amin, and he would say Amin aloud in the prayer.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 2445
Hadith Gradingمحدثین:صحيح
Hadith Takhrij«صحيح۔ اخرجه الدار قطني في سننه 1/333»