Sunan Abi Dawud 933
سنن أبي داود#933Sahihحَدَّثَنَا مَخْلَدُ بْنُ خَالِدٍ الشَّعِيرِيُّ، حَدَّثَنَا ابْنُ نُمَيْرٍ، حَدَّثَنَا عَلِيُّ بْنُ صَالِحٍ، عَنْ سَلَمَةَ بْنِ كُهَيْلٍ، عَنْ حُجْرِ بْنِ عَنْبَسٍ، عَنْ وَائِلِ بْنِ حُجْرٍ، أَنَّهُ صَلَّى خَلْفَ رَسُولِ اللَّهِ صلى الله عليه وسلم فَجَهَرَ بِآمِينَ وَسَلَّمَ عَنْ يَمِينِهِ وَعَنْ شِمَالِهِ حَتَّى رَأَيْتُ بَيَاضَ خَدِّهِ .
Wail b, hujr said that he prayed behind the Messenger of Allah (ﷺ),and he said Amin loudly and saluted at his right and left sides until I saw the whiteness of his cheek
Scholarly Authentication
The label above is the grade most of these scholars gave — one dissenting opinion no longer speaks for all of them. If any scholar calls a narration fabricated, that verdict is shown instead, whatever the others say. Each scholar's own wording:
In-book reference: 2:544