Sahih Muslim 5286
صحيح مسلم#5286SahihAnas reported that Allah's Messenger (ﷺ) used to breathe three times in the course of a drink (i. e. he drank in three gulps)
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: 36:160