Sahih Muslim 3151
صحيح مسلم#3151SahihIbn Umar reported that Allah's Messenger (ﷺ) got his head shaved on the occasion of the Farewell Pilgrimage
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: 15:355