Ibn 'Abbas (May Allah be pleased with them) reported: I served Messenger of Allah ﷺ Zamzam water to drink and he drank it while he was standing. [Al-Bukhari and Muslim].
وعن ابن عباس رضى الله عنهما قال: سقيت النبي ﷺ من زمزم، فشرب وهو قائم . .