Sahih Muslim 2882
صحيح مسلم#2882SahihKa'b b. Ujra (Allah be pleased with him) reported that the Messenger of Allah (ﷺ) happened to pass by him during the period of Hudaibiya. Thereupon he (the Holy Prophet) said to him (Ka'b b. Ujra):Do these vermins trouble your head? He said: Yes. Thereupon he (the Holy Prophet) said: Shave your head. Then sacrifice a goat or observe fasts for three days or give three sits of dates to feed six needy persons
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: 15:92