Sahih al-Bukhari, Hadith 388 ⓘ
Narrated Al-Mughira bin Shu'ba: I helped the Prophet in performing ablution and he passed his wet hands over his Khuffs and prayed.
حَدَّثَنَا إِسْحَاقُ بْنُ نَصْرٍ، قَالَ حَدَّثَنَا أَبُو أُسَامَةَ، عَنِ الأَعْمَشِ، عَنْ مُسْلِمٍ، عَنْ مَسْرُوقٍ، عَنِ الْمُغِيرَةِ بْنِ شُعْبَةَ، قَالَ وَضَّأْتُ النَّبِيَّ صلى الله عليه وسلم فَمَسَحَ عَلَى خُفَّيْهِ وَصَلَّى.
also referenced under: Book 8, Hadith 40 (In-Book) & Volume 1, Book 8, Hadith 385 (USC-MSA)