Sahih al-Bukhari 206
Sahih al-Bukhari · Book 4: Ablutions (Wudu') · If one puts on (Khuff) just after performing ablution (ther is no need to wash one's feet again in ablution) (24 hours for non-travellers and three days for travelers)
Narrated `Urwa bin Al-Mughira:
حَدَّثَنَا أَبُو نُعَيْمٍ ، قَالَ حَدَّثَنَا زَكَرِيَّاءُ ، عَنْ عَامِرٍ ، عَنْ عُرْوَةَ بْنِ الْمُغِيرَةِ ، عَنْ أَبِيهِ ، قَالَ كُنْتُ مَعَ النَّبِيِّ صلى الله عليه وسلم فِي سَفَرٍ، فَأَهْوَيْتُ لأَنْزِعَ خُفَّيْهِ فَقَالَ " دَعْهُمَا، فَإِنِّي أَدْخَلْتُهُمَا طَاهِرَتَيْنِ ". فَمَسَحَ عَلَيْهِمَا.
My father said, "Once I was in the company of the Prophet (ﷺ) on a journey and I dashed to take off his Khuffs (socks made from thick fabric or leather). He ordered me to leave them as he had put them after performing ablution. So he passed wet hands over them.