Sahih Bukhari
Pilgrimmage (Hajj)
Volume: 002 / Book Number: 026 / Hadith Number: 701
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.