Language:
كتاب الحج
25  
Hajj (Pilgrimage)
(76)
Chapter: What is said about Zamzam (water)
(76)
باب مَا جَاءَ فِي زَمْزَمَ
Sahih al-Bukhari 1637

Narrated Ibn `Abbas:

I gave Zamzam water to Allah's Messenger (ﷺ) and he drank it while standing. `Asim (a sub-narrator) said that `Ikrima took the oath that on that day the Prophet (ﷺ) had not been standing but riding a camel.

حَدَّثَنَا مُحَمَّدٌ ـ هُوَ ابْنُ سَلاَمٍ ـ أَخْبَرَنَا الْفَزَارِيُّ، عَنْ عَاصِمٍ، عَنِ الشَّعْبِيِّ، أَنَّ ابْنَ عَبَّاسٍ ـ رضى الله عنهما ـ حَدَّثَهُ قَالَ سَقَيْتُ رَسُولَ اللَّهِ صلى الله عليه وسلم مِنْ زَمْزَمَ فَشَرِبَ وَهُوَ قَائِمٌ‏.‏ قَالَ عَاصِمٌ فَحَلَفَ عِكْرِمَةُ مَا كَانَ يَوْمَئِذٍ إِلاَّ عَلَى بَعِيرٍ‏.‏
Reference : Sahih al-Bukhari 1637
In-book reference : Book 25, Hadith 120
USC-MSA web (English) reference : Vol. 2, Book 26, Hadith 701
  (deprecated numbering scheme)