Hadith #527
Ungraded
Arabic Text
وَبِإِسْنَادِهِ قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ إِذَا كَبَّرَ الْإِمَامُ فَكَبِّرُوا وَإِذَا رَكَعَ فَارْكَعُوا وَإِذَا سَجَدَ فَاسْجُدُوا وَإِذَا صَلَّى جَالِسًا فَصَلُّوا جُلُوسًا
English Translation
With the same chain, the Messenger of Allah ﷺ said: "When the imam says takbir, say takbir. When he bows, bow. When he prostrates, prostrate. When he prays sitting, pray sitting."
Quran References
Reference: Musnad Ahmad, Book 21, Hadith 527
Sunnah.com ref: Musnad Ahmad 9765
Islam.wiki ID: IWH-46155