Sahih Muslim 741
صحيح مسلم#741SahihJubair b. Mut'im reported it from the Messenger of Allah (ﷺ) that a mention was made before him about bathing because of sexual intercourse and he said:I pour water over my head thrice
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: 3:63