Abu Dawud Book 3, Hadith Number 1614.

Chapter : Not known.

Narated By AbuSa’id al-Khudri : I shall always pay one sa’. We used to pay during the lifetime of the Apostle of Allah (PBUH) one sa’ of dried dates or of barley, or of cheese, or of raisins. This is the version of Yahya. Sufyan added in his version: “or one sa’ of flour.” The narrator Hamid (ibn Yahya) said: The people objected to this (addition); Sufyan then left it.