Sahih al-Bukhari 5615
Sahih al-Bukhari · Book 74: Drinks · To drink while standing
Narrated An-Nazzal:
حَدَّثَنَا أَبُو نُعَيْمٍ ، حَدَّثَنَا مِسْعَرٌ ، عَنْ عَبْدِ الْمَلِكِ بْنِ مَيْسَرَةَ ، عَنِ النَّزَّالِ ، قَالَ أَتَى عَلِيٌّ ـ رضى الله عنه ـ عَلَى باب الرَّحَبَةِ، فَشَرِبَ قَائِمًا فَقَالَ إِنَّ نَاسًا يَكْرَهُ أَحَدُهُمْ أَنْ يَشْرَبَ وَهْوَ قَائِمٌ، وَإِنِّي رَأَيْتُ النَّبِيَّ صلى الله عليه وسلم فَعَلَ كَمَا رَأَيْتُمُونِي فَعَلْتُ.
Ali came to the gate of the courtyard (of the Mosque) and drank (water) while he was standing and said, "Some people dislike to drink while standing, but I saw the Prophet (ﷺ) doing (drinking water) as you have seen me doing now."