Sahih Muslim 2283
صحيح مسلم#2283SahihSad b. Abu Sarh heard Abu Sa'id al-Khudri as saying:We used to take out as the Zakat of Fitr one sa' of grain, or one sa' of barley or one sa' of dates, or one sa' of cheese or one sa' of raisins
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: 12:21