Is it permissible for me to buy back a gift from the person I gave it to if I need it?

Question:
He says: Honorable Shaykh, may Allah grant you success, if I give a gift to a person, is it permissible for me to buy it back from him if I need it?

Answer:
No, the Messenger (peace and blessings be upon him) forbade this. If you give charity to someone and he wants to sell it, do not buy it, and do not go back on your gift. The one who goes back on his gift is like a dog that vomits and then goes back to its vomit. 'Umar (may Allah be pleased with him) once gave a horse to a man, and the man wanted to sell it. 'Umar wanted to buy it, but he asked the Prophet (peace and blessings be upon him), who said: "Do not buy it, even if he sells it for a dirham, and do not go back on it." Yes.