the Messenger of Allah enjoined Zakatul-Fitr, one Sa of dates or one Sa of barley.Abdullah said: The people made two Mudd (equal to half of a Sa) of wheat as its equivalent.
Sunan Ibn Majah Book 8, Hadith 43
← Previous Hadith the Prophet took one-tenth of honey (as Zakat).

Sunan Ibn Majah Book 8, Hadith 42 Next Hadith → Umar said: “The Messenger of Allah enjoined Sadaqatul-Fitr, one Sa, of barley or one Sa of dates for every Muslim, free or slave, male or female.”

Sunan Ibn Majah Book 8, Hadith 44