What is meant by "the marriage remains" in the context of the husband's disapproval of khul' after he has reached maturity and come to his senses, and is the wife forced to live with him in this situation?

Scholars have differed on the ruling concerning a guardian divorcing his minor son's wife (khul'). The Shafi'i and Hanafi schools, as well as the well-known narration among the Hanbali school, are of the view that it is not permissible for the guardian to initiate khul' on behalf of the minor. In contrast, the Maliki school permits it if it serves a benefit.

The Malikis based their view on the principle that a father's guardianship over his son is established to look after the child's best interests. Just as a father is permitted to marry off his son to achieve his benefit, so too is he permitted to divorce his son's wife (khul') if there is a benefit in it.

As for the Hanafis, Shafi'is, and Hanbalis, they argued against its permissibility by stating that a minor has no legally recognized intention in khul' or divorce. Guardianship is established over a minor to achieve his benefit, and this is not realized in divorce or manumission.

The phrase "then the marriage remains" means that the minor's wife remains under his marital bond, and the marriage between them continues.