Sunan Abi Dawud 904
سنن أبي داود#904Sahihحَدَّثَنَا عَبْدُ الرَّحْمَنِ بْنُ مُحَمَّدِ بْنِ سَلاَّمٍ، حَدَّثَنَا يَزِيدُ، - يَعْنِي ابْنَ هَارُونَ - أَخْبَرَنَا حَمَّادٌ، - يَعْنِي ابْنَ سَلَمَةَ - عَنْ ثَابِتٍ، عَنْ مُطَرِّفٍ، عَنْ أَبِيهِ، قَالَ رَأَيْتُ رَسُولَ اللَّهِ صلى الله عليه وسلم يُصَلِّي وَفِي صَدْرِهِ أَزِيزٌ كَأَزِيزِ الرَّحَى مِنَ الْبُكَاءِ صلى الله عليه وسلم .
Narrated Abdullah ibn ash-Shikhkhir: I saw the Messenger of Allah (ﷺ) praying and a sound came from his breast like the rumbling of a mill owing to weeping
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: 2:514