Sahih Muslim 274b
Sahih Muslim · Book 2: The Book of Purification · Wiping over the khuff (leather socks)
This hadith has been transmitted with the same chain of transmitters by Yahya b. Sa'id with the addition of these words:
وَحَدَّثَنَاهُ مُحَمَّدُ بْنُ الْمُثَنَّى ، حَدَّثَنَا عَبْدُ الْوَهَّابِ ، قَالَ سَمِعْتُ يَحْيَى بْنَ سَعِيدٍ ، بِهَذَا الإِسْنَادِ وَقَالَ فَغَسَلَ وَجْهَهُ وَيَدَيْهِ وَمَسَحَ بِرَأْسِهِ ثُمَّ مَسَحَ عَلَى الْخُفَّيْنِ .
" He washed his face and hands, and wiped his head and then wiped his socks."