al-Hakam bin 'Utayba الحكم بن عتيبة · The Book of Zakah

"The Messenger of Allah enjoined Sadaqatul Fitr upon male and female, free and slave; a Sa of dates or a Sa of barley." He said: "The people considered that equivalent to half a Sa of wheat."

"I heard that you do some jobs for the people but when payment is given to you, you do not like it." I said: "Yes (that is so)." He said: "Why do you do that? I said: "I have horses and slaves and well off, and I wanted my work to be an act of charity toward the Muslims." 'Umar said to him: "Do not do that. I used to want the same thing as you. The Messenger of Allah…

"Go to the Messenger of Allah and say to him: 'O Messenger of Allah, appoint us to collect the Sadaqat!' 'Ali bin Abi Talib came along when we were like that, and he said to them: "The Messenger of Allah will not appoint any of you to collect the Sadaqah."' 'Abdul-Muttalib said: "So I went with Al-Fadl until we came to the Messenger of Allah and he said to us: "This Zakah is the dirt of the people, and it…