(100) باب شِرَاءِ الصَّدَقَةِ
It was narrated from Zaid bin Aslam that his father said:
"I heard 'Umar say: 'I gave a horse to someone to ride in the cause of Allah, the Mighty and Sublime, and the one who kept it neglected it. I wanted to buy it back from him, and I thought that he would sell it at a cheap price. I asked the Messenger for Allah about that and he said: Do not buy it, even if he gives it to you for a Dirham. The one who takes back his charity is like the dog that goes back to its own vomit. "'
Reference: Sunan an-Nasa'i 2615
In-book reference: Book 23, Hadith 0
English translation: Vol. 3, Book 23, Hadith 2616