Obligation of the full Mahr upon consummating the marriage

Q 2: Someone paid half of the Mahr (mandatory gift to a bride from her groom) at the time of marriage and deferred the other half. He later had a son and a daughter from his wife, then he divorced his wife without paying the deferred amount of Mahr. Must he pay this amount to the wife?

A: He must pay the deferred amount of Mahr because the marriage was consummated. May Allah grant us success. May peace and blessings of Allah be upon our Prophet Muhammad, his family and Companions.