If a child does not complete Hajj or 'Umrah, he owes nothing

A man took his son with him to perform 'Umrah, and the child wore the ihram garments. During the 'Umrah, the child took off his ihram and did not complete these rites. What is required of him?
He owes nothing.And the correct view is: As for those who have not reached puberty, if they enter the state of ihram for Hajj or 'Umrah, then what they perform is accepted, and what they do not perform is not required of them; because they are not subject to religious obligations.