Maliks Muwatta Book 36, Hadith Number 42B.
Yahya said that he heard Malik say, “The way of doing things in our community about which there is no dispute, is that if a man gives sadaqa to his son – sadaqa which the son takes possession of or which is in the father’s keeping and the father has had his sadaqa witnessed, he cannot take back any of it because he cannot reclaim any sadaqa.”
Yahya said that he heard Malik say, “The generally agreed-on way of doing things in our community in the case of someone who gives his son a gift or grants him a gift which is not sadaqa is that he can take it back as long as the child does not start a debt, which people claim from him, and which they trust him for on the strength of the gift his father has given him. The father cannot take back anything from the gift after debts are started against it.
“If a man gives his son or daughter something and a woman marries the man, and she only marries him for the wealth and the property which his father has given him and so the father wants to take that back, or, if a man marries a woman whose father has given her a gift and he marries her with an increased bride-price because of the wealth and property that her father has given, then the father says, ‘I will take that back,’ then the father cannot take back any of that from the son or daughter if it is as I have described to you.”