English Translation
Narrated Ibn Abbas: I gave Zam-zam water to Allah's Apostle and he drank it while standing. 'Asia (a sub-narrator) said that 'Ikrima took the oath that on that day the Prophet had not been standing but riding a camel.
This hadith is from Sahih al-Bukhari, the most rigorously authenticated collection in Islamic scholarship. No editorial opinion is added.