Sahih Muslim 743
صحيح مسلم#743SahihJabir b. 'Abdullah reported:When the Messenger of Allah (ﷺ) took a bath because of sexual intercourse, he poured three handfuls of water upon his head. Hasan b. Muhammad said to him (the narrator): My hair is thick. Upon this Jabir observed. I said to him: O son of my brother, the hair of the Messenger of Allah (ﷺ) was thicker than your hair and these were more fine (than yours)
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: 3:65