Jami` at-Tirmidhi Book 26, Hadith 23
From his father, from his grandfather who said: "I saw the Messenger of Allah (ﷺ) drinking while standing and sitting."
This Hadith is Hasan Sahih.
"The Prophet (ﷺ) drank from Zamzam while he was standing."
He said: There are narrations on this topic from 'Ali, Sa'd, 'Abdullah bin 'Amr and 'Aishah.
This Hadith is Hasan Sahih.
That the Prophet (ﷺ) would breathe three times in the vessel and say: "It is more wholesome and thirst quenching."
This Hadith is Hasan Gharib. Hisham Ad-Dastawa'i reported it from Abu 'Isam, from Anas.