Does the divorce that the husband made conditional on his son's return home take effect if the husband himself brings his son back, especially since he had uttered divorce twice before?

The phrase uttered by the husband is a conditional promise of divorce, contingent on the son's return home, and confirmed by an oath if "I swear" is considered an oath by Allah. If the son returns, the divorce does not automatically occur just by his return, but the husband breaks his oath if he does not divorce his wife. The husband is advised not to divorce but rather to offer expiation for breaking an oath (feeding ten poor persons or clothing them), as breaking the oath is preferable in this situation to avoid the harm of divorce. This is applicable if his statement "I swear" is considered a binding oath; otherwise, no expiation is due from him.