Sahih Muslim 2285
صحيح مسلم#2285SahihSa'd b. Abu Sarh heard Abu Sa'id al-Khudri as saying:We, on behalf of young or old, free or slave, used to take out the Zakat of Fitr while the Messenger of Allah (may peace he upon him) was among us, in three kinds, one sa' of dates, one sa' of cheese, or one sa' of barley, and we continued to take that out till the time of Mu'awiya, for he saw that two mudds of wheat were equal to one sa' of dates. Abu Sa'id sald: I would continue to take that out as before (i e. one sa' of wheat)
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: 12:23