Sahih Muslim 3154
صحيح مسلم#3154SahihAnas b. Malik (Allah be pleased with him) reported that Allah's Messenger (ﷺ) threw stones at Jamrat al-'Aqaba. He then want to his sacrificial animal and sacrificed it, and there was sitting the barber, and he pointed with his hand towards his head, and he shaved the right half of it, and he (the Holy Prophet) distributed them (the hair) among those who were near him. And he again said:Shave the other half, and said: Where is Abu Talha and gave it (the hair) to him
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: 15:358