Sunan Ibn Majah 1825
سنن ابن ماجه#1825SahihIbn Umar narrated that: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
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniSahih
Muhammad Fouad Abd al-BaqiSahih
Shuaib Al ArnautSahih
Zubair Ali ZaiSahih - Bukhari And Muslim
In-book reference: 8:43