Abdullah bin Bishr al-Khath'ami narrates from a man of his tribe that a jar fell on a man from a monks' dwelling in Kufah. He brought it to Sayyiduna Ali (may Allah be pleased with him), and he said: Divide it into five parts. Then he said: Take four fifths of it and leave one. Then he asked: Are there poor and needy people in your tribe? He said: Yes. Sayyiduna Ali (may Allah be pleased with him) said: Then take it too and distribute it among them.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الزكاة / 7656