صحيح البخاري Sahih Bukhari كتاب الوضوء The Book of Wudu (Ablution)
بَابُ إِذَا أَدْخَلَ رِجْلَيْهِ وَهُمَا طَاهِرَتَانِ:

(49) Chapter. If one puts on (Khuff) just after performing ablution (there is no need to wash one’s feet again in ablution) (24 hours for non-travellers and three days for travellers).

1 hadith
Hadith 206
حَدَّثَنَا أَبُو نُعَيْمٍ ، قَالَ : حَدَّثَنَا زَكَرِيَّاءُ ، عَنْ عَامِرٍ ، عَنْ عُرْوَةَ بْنِ الْمُغِيرَةِ ، عَنْ أَبِيهِ ، قَالَ : كُنْتُ مَعَ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فِي سَفَرٍ فَأَهْوَيْتُ لِأَنْزِعَ خُفَّيْهِ ، فَقَالَ : " دَعْهُمَا ، فَإِنِّي أَدْخَلْتُهُمَا طَاهِرَتَيْنِ ، فَمَسَحَ عَلَيْهِمَا " .
Narrated `Urwa bin Al-Mughira: My father said, "Once I was in the company of the Prophet 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.
Hadith Reference Sahih Bukhari / The Book of Wudu (Ablution) / Hadith: 206
Hadith Grading محدثین: أحاديث صحيح البخاريّ كلّها صحيحة