Hazrat Umar (may Allah be pleased with him) narrated that I gave a horse to a man to ride in the way of Allah, but that man spoiled the horse. So I wished to buy it back, and I also thought that he would sell it at a cheap price. Therefore, I asked the Messenger of Allah (peace and blessings of Allah be upon him) about this, and he said: Do not take back your charity, even if he gives it to you for one dirham, because the example of one who takes back what he has given in charity is like the one who vomits and then licks it up.