حَدَّثَنَا 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 ‏.‏
Translation
Narrated AbuHurayrah

Muhammad ibn al-Ala' narrated to us: Mu'awiyah ibn Hisham informed us, from Yunus ibn al-Harith, from Ibrahim ibn Abi Maymunah, from Abu Salih, from Abu Hurayrah, from the Prophet (ﷺ) who said: "This verse was revealed concerning the people of Quba':

In it are men who love to be purified
He said: They used to wash with water, so this verse was revealed concerning them."