What is the ruling on what a guardian of an orphan takes from the charity given to him?

Question: An orphan lost his family, and we took care of him and protected him. He has two uncles, and there are people who wish him well and give him money, so some of it may come to us. Please note that our own income is more than that, but we consider the orphan one of our children. Please advise us on this, may Allah reward you with good?
There is no blame on you regarding the charity given to him, if it is equal to or less than your expenses on him. As for what exceeds that, you must preserve it for him. And be assured of a great reward for his guardianship and your kindness to him.