Sahih Muslim 5281
صحيح مسلم#5281SahihIbn 'Abbas reported that Allah's Messenger (ﷺ) drank (water) from Zamzam in a bucket while he was standing
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Every narration in Sahih Muslim is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 36:155