Sahih Muslim #632 · The Book of Marriage

Sahih MuslimUrwah al Mughira reported it from his father
Sahih Muslim · Book 16 · The Book of Marriage
Sahih Muslim · كتاب 16 · كتاب النكاح
He (Mughira) helped the Apostle (ﷺ) in performing the ablution, and he performed it and wiped over his shoes. He (Mughira) said to him (about the washing of the feet after putting them off), but he (the Holy Prophet) said: I put them (feet) in when these were clean.
وَحَدَّثَنِي مُحَمَّدُ بْنُ حَاتِمٍ، حَدَّثَنَا إِسْحَاقُ بْنُ مَنْصُورٍ، حَدَّثَنَا عُمَرُ بْنُ أَبِي زَائِدَةَ، عَنِ الشَّعْبِيِّ، عَنْ عُرْوَةَ بْنِ الْمُغِيرَةِ، عَنْ أَبِيهِ، أَنَّهُ وَضَّأَ النَّبِيَّ صلى الله عليه وسلم فَتَوَضَّأَ وَمَسَحَ عَلَى خُفَّيْهِ فَقَالَ لَهُ فَقَالَ ‏
"‏ إِنِّي أَدْخَلْتُهُمَا طَاهِرَتَيْنِ ‏"‏ ‏.‏
Reference : Sahih Muslim 632In-book reference : Book 2, Hadith 99