“The Prophet (Allah bless him and give him peace) drank from [the water of] Zamzam while standing.”

"I saw Allah's Messenger (Allah bless him and give him peace) drink while both standing and sitting.”

"I gave Allah’s Messenger (Allah bless him and give him peace) Zamzam water, and he drank it standing up.”

'This is the minor ritual ablution of someone who has not excreted any substance that would render him ritually impure. I saw Allah’s Messenger (Allah bless him and give him peace) act in this manner'."

"The Prophet (Allah bless him and give him peace) used to breathe into the vessel three times when he drank, and he would say: 'It is more wholesome and more thirst-quenching!’”

"When the Prophet drank (Allah bless him and give him peace), he used to take two breaths.”

"The Prophet (Allah bless him and give him peace) entered my presence, then he drank from a suspended waterskin while standing, so I reached up to its mouth and cut it loose.”

“Anas ibn Malik used to breathe into the vessel three times, and Anas ibn Malik maintained that the Prophet (Allah bless him and give him peace) likewise used to breathe into the vessel three times.”

"The Prophet (Allah bless him and give him peace) entered the presence of Umm Sulaim, and a waterskin was suspended there, so he drank from the mouth of the waterskin while standing. Umm Sulaim therefore reached up to the head of the waterskin and cut it loose.”

“The Prophet (Allah bless him and give him peace) used to drink while standing.”