Sahih Muslim 2287
صحيح مسلم#2287SahihAbu Sa'id al-Khudri reported that when Mu'awiya prescribed half a sa' of wheat equal to one sa' of dates, he (Abu Sa'id al-Khudri) objected to it, and said:I would take out (Sadaqat-ul-Fitr) but that which I used to bring forth during the lifetime of the Messenger of Allah (ﷺ) one sa' of dates, or one sa' of raisins, or one sa' of barley, or one sa' of cheese
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: 12:25