Hadith #418
Ungraded
Arabic Text
إِنَّمَا الْإِمَامُ جُنَّةٌ فَإِنْ صَلَّى قَاعِدًا فَصَلُّوا قُعُودًا وَإِذَا قَالَ سَمِعَ اللَّهُ لِمَنْ حَمِدَهُ فَقُولُوا اللَّهُمَّ رَبَّنَا وَلَكَ الْحَمْدُ فَإِذَا وَافَقَ قَوْلُ أَهْلِ الْأَرْضِ قَوْلَ أَهْلِ السَّمَاءِ غُفِرَ لَهُ مَا مَضَى مِنْ ذَنْبِهِ
English Translation
"The imam is but a shield. If he prays sitting, then pray sitting. When he says: 'Sami'Allahu liman hamidah (Allah hears the one who praises Him),' say: 'Allahumma Rabbana wa lakal-hamd (O Allah, our Lord, to You is all praise).' When the words of the people of the earth coincide with the words of the people of the heaven, his past sins are forgiven."
Quran References
Reference: Musnad Ahmad, Book 21, Hadith 418
Sunnah.com ref: Musnad Ahmad 9656
Islam.wiki ID: IWH-46046