I served. (water of) Zamzam to Allah's Messenger (ﷺ), and he drank it while standing.
Sahih Muslim Book 36, Hadith 154
← Previous Hadith None of you should drink while standing; and if anyone forgets, he must vomit.

Sahih Muslim Book 36, Hadith 153 Next Hadith → Ibn 'Abbas reported that Allah's Messenger (ﷺ) drank (water) from Zamzam in a bucket while he was standing.

Sahih Muslim Book 36, Hadith 155