Sahih al-Bukhari 388
Sahih al-Bukhari · Book 8: Prayers (Salat) · To offer As-Salat (the prayers) wearing Khuff (leather socks)
Narrated Al-Mughira bin Shu'ba:
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.
I helped the Prophet (ﷺ) in performing ablution and he passed his wet hands over his Khuffs and prayed.