Hadithcore
Sunan Abi Dawud, 849
hasan· Al-Albani

‘Amir said:

The people behind the imam should not say: “Allah listens to him who praises Him.” But they should say: “ Our Lord, to You be the praise.”

حَدَّثَنَا بِشْرُ بْنُ عَمَّارٍ، حَدَّثَنَا أَسْبَاطٌ، عَنْ مُطَرِّفٍ، عَنْ عَامِرٍ، قَالَ لاَ يَقُولُ الْقَوْمُ خَلْفَ الإِمَامِ سَمِعَ اللَّهُ لِمَنْ حَمِدَهُ وَلَكِنْ يَقُولُونَ رَبَّنَا لَكَ الْحَمْدُ ‏.‏

References2 variants
In-Book Reference
Book 2, Hadith 459
English Reference
Book 2, Hadith 848