Hadith 5:742
Abu Bakr narrated to us, he said: Mu'adh ibn Mu'adh narrated to us, from Ash'ath, from al-Hasan, regarding a man who gives his zakat to a poor person, then it becomes clear to him that he is rich. He said: It suffices him.
حدثنا أبو بكر قال حدثنا معاذ بن معاذ عن أشعث عن الحسن في الرجل يعطي زكاته إلى فقير ثم يتبين له أنه غني قال أجزى عنه