Language:
كتاب الجهاد والسير
56  
Fighting for the Cause of Allah (Jihaad)
(90)
Chapter: The (wearing of a) cloak on journeys and in war
(90)
باب الْجُبَّةِ فِي السَّفَرِ وَالْحَرْبِ
Sahih al-Bukhari 2918

Narrated Al-Mughira bin Shu`ba:

Allah's Messenger (ﷺ) went out to answer the call of nature and on his return I brought some water to him. He performed the ablution while he was wearing a Sha'mi cloak. He rinsed his mouth and washed his nose by putting water in it and then blowing it out, and washed his face. Then he tried to take out his hands through his sleeves but they were tight, so he took them out from underneath, washed them and passed wet hands over his head and over his leather socks.

حَدَّثَنَا مُوسَى بْنُ إِسْمَاعِيلَ، حَدَّثَنَا عَبْدُ الْوَاحِدِ، حَدَّثَنَا الأَعْمَشُ، عَنْ أَبِي الضُّحَى، مُسْلِمٍ ـ هُوَ ابْنُ صُبَيْحٍ ـ عَنْ مَسْرُوقٍ، قَالَ حَدَّثَنِي الْمُغِيرَةُ بْنُ شُعْبَةَ، قَالَ انْطَلَقَ رَسُولُ اللَّهِ صلى الله عليه وسلم لِحَاجَتِهِ ثُمَّ أَقْبَلَ، فَلَقِيتُهُ بِمَاءٍ، وَعَلَيْهِ جُبَّةٌ شَأْمِيَّةٌ، فَمَضْمَضَ وَاسْتَنْشَقَ وَغَسَلَ وَجْهَهُ، فَذَهَبَ يُخْرِجُ يَدَيْهِ مِنْ كُمَّيْهِ فَكَانَا ضَيِّقَيْنِ، فَأَخْرَجَهُمَا مِنْ تَحْتُ، فَغَسَلَهُمَا وَمَسَحَ بِرَأْسِهِ وَعَلَى خُفَّيْهِ‏.‏
Reference : Sahih al-Bukhari 2918
In-book reference : Book 56, Hadith 131
USC-MSA web (English) reference : Vol. 4, Book 52, Hadith 167
  (deprecated numbering scheme)