Musannaf Ibn Abi Shaybah

Hazrat Auf narrates that Hazrat Umar bin Abdul Aziz wrote to Hazrat Adi, who read it aloud in Basra, which I myself heard. It was written in it that Sadaqat al-Fitr is obligatory upon every young and old, free and slave, male and female: half a sa’ of wheat or one sa’ of dates.