It is narrated from Sayyiduna Ibn Abbas (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings be upon him) asked for water, and a bucket of Zamzam was brought to him (peace and blessings be upon him), and he (peace and blessings be upon him) drank while standing.
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 12524