كتاب الطهارة
1  
The Book of Purification
(5)
Chapter: Wiping over Socks
(5)
باب المسح على الخفين
Bulugh al-Maram 58
Narrated Mughira bin Shu’ba (rad):
Once I was in the company of the Prophet (ﷺ), he then performed ablution and I dashed to take off his socks. He said, “Leave them for I had put them on after performing ablution”. So he wiped over them [Agreed Upon].
عَنْ اَلْمُغِيرَةِ بْنِ شُعْبَةَ ‏- رضى الله عنه ‏- قَالَ: { كُنْتُ مَعَ اَلنَّبِيِّ ‏- صلى الله عليه وسلم ‏-فَتَوَضَّأَ, فَأَهْوَيْتُ لِأَنْزِعَ خُفَّيْهِ, فَقَالَ: "دَعْهُمَا, فَإِنِّي أَدْخَلْتُهُمَا طَاهِرَتَيْنِ" فَمَسَحَ عَلَيْهِمَا } مُتَّفَقٌ عَلَيْه ِ 1‏ .‏


‏1 ‏- صحيح.‏ رواه البخاري (206)‏، ومسلم (274)‏ (79)‏.‏

Reference : Bulugh al-Maram 58
In-book reference : Book 1, Hadith 68
English translation : Book 1, Hadith 63