Is it permissible for a mother to take from her son's reward to pay off her debt?

Question:
May Allah reward you, Honorable Shaykh. This is a woman who says that she has a son studying in a Qur'an memorization program, and he receives a monthly reward. Her mother has a debt. Is it permissible for her to take from his reward to pay off her debt?

Answer:
Yes, if this does not harm the son and the son does not need it, she may take from his money. The Prophet (peace and blessings be upon him) said, "You and your wealth belong to your father." He also said, . So if this does not harm the son and the son does not need it, but rather it is surplus beyond his needs, there is nothing wrong with her taking from it.