The ruling on giving a prize to a parent’s child who memorizes the Qur’an

Question:
He says: Honorable Shaykh, may Allah grant you success. If a father says to his children, “Whoever among you memorizes, for example, three parts of the Qur’an will receive a gift,” or “Whoever gets first place in the studies will receive a gift,” and he gives the prize to the winner and not to the other sons, is he allowed to do that?

Answer:
Yes, he is allowed to do that; because he did not give it to him out of favoritism, but rather he gave him a prize to encourage him to memorize the Qur’an. He did not prevent the others from memorizing; he did not stop them. If they had memorized it, they would have received the same. Also, it is permissible for him to give to the poor one among them, and the needy one he gives what he needs. And if he is poor and has no source of income, he may give him what suffices him. Yes.