Is the emancipation (Istilaad) of a female slave who has borne children to the incompetent person valid?

Primary text

The emancipation (Istilaad) of a female slave who has borne children to the incompetent person is valid. The slave is emancipated upon his death. This ruling is prioritized because if such an action is valid for an insane person, it is more appropriate for the financially incompetent person.