Is going to the mosque more deserving, or obeying the mother if she asks for a task before the prayer?

If a mother prevents her son from performing congregational prayers in the mosque without necessity, then obedience to her is not obligatory, because congregational prayer is obligatory. However, if the reason for prevention is necessary, then it is permissible to be absent from the congregation in the mosque, while performing the prayer in congregation if possible. And Paradise's dowry is costly and requires patience.