Sunan Abi Dawud 44
سنن أبي داود#44Sahihحَدَّثَنَا مُحَمَّدُ بْنُ الْعَلاَءِ، أَخْبَرَنَا مُعَاوِيَةُ بْنُ هِشَامٍ، عَنْ يُونُسَ بْنِ الْحَارِثِ، عَنْ إِبْرَاهِيمَ بْنِ أَبِي مَيْمُونَةَ، عَنْ أَبِي صَالِحٍ، عَنْ أَبِي هُرَيْرَةَ، عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ " نَزَلَتْ هَذِهِ الآيَةُ فِي أَهْلِ قُبَاءَ { فِيهِ رِجَالٌ يُحِبُّونَ أَنْ يَتَطَهَّرُوا } قَالَ كَانُوا يَسْتَنْجُونَ بِالْمَاءِ فَنَزَلَتْ فِيهِمْ هَذِهِ الآيَةُ .
Narrated AbuHurayrah: The Prophet (ﷺ) said: The following verse was revealed in connection with the people of Quba': "In it are men who love to be purified" (ix.108). He (AbuHurayrah) said: They used to cleanse themselves with water after easing. So the verse was revealed in connection with them
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: 1:44