Does a child's Hajj suffice for the obligatory Hajj after reaching puberty?

Question:
May Allah reward you, Your Eminence, father. This questioner asks: Can it be inferred from the hadith of the mother who raised her child that a child's Hajj suffices for the obligatory one? Because the Messenger (peace and blessings be upon him) said, "Yes."

Answer:
Yes, he has a Hajj, but the Hajj is a voluntary act. The obligatory one does not become required of him until he reaches puberty. A child does not have an obligatory Hajj; he does not have an obligatory Hajj until he reaches puberty.