Sahih Muslim 2679
صحيح مسلم#2679SahihIbn Ka'b b. Malik reported on the authority of his father that the Messenger of Allah (ﷺ) sent him and Aus b. Hadathan during the days of Tashriq to make this announcement:None but the believer would be admitted into Paradise, and the days of Mina' are the days meant for eating and drinking
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: 13:185