Lahiq bin Humayd said: When Umar bin al-Khattab (may Allah be pleased with him) sent Ammar bin Yasir, Abdullah bin Mas'ud and Uthman bin Hunayf (may Allah be pleased with them) to Kufah, he appointed Ammar over the prayer and the army, appointed Ibn Mas'ud (may Allah be pleased with him) over judgeship and the treasury, and appointed Uthman bin Hunayf (may Allah be pleased with him) over the land. He fixed for them one goat every day: half of it for Ammar bin Yasir (may Allah be pleased with him), and the other half between these two. Sa'id said: I do not remember (the part about) the food. Then he said: I have placed (you and myself), with respect to the treasury, in the position of the guardian of an orphan: "And whoever is rich, let him abstain; and whoever is poor, let him eat in a fair manner" [Surah al-Nisa: 6]. And I do not think that a town from which a goat is taken every day will be anything but quickly ruined.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب قسم الفيء والغنيمة / 13012