سنن ابن ماجه 1239

It was narrated that Abu Hurairah said:“The Messenger of Allah (ﷺ) said: ‘The Imam is appointed to be followed. When he says Allahu Akbar, then say Allahu Akbar; when he bows, then bow; when he says Sami’ Allahu liman hamidah, then say Rabbana wa lakal-hamd; when he prostrates then prostrate; if he prays standing, then pray standing, and if he prays sitting down then pray sitting down.”

Rapporté par Abu Hurairah : Le Messager d’Allah (ﷺ) a dit : “L’imam est là pour être suivi. Quand il dit Allahu Akbar, dites Allahu Akbar ; quand il s’incline, inclinez-vous ; quand il dit Sami’ Allahu liman hamidah, dites Rabbana wa lakal-hamd ; quand il se prosterne, prosternez-vous ; s’il prie debout, priez debout, et s’il prie assis, priez assis.”