What is the ruling concerning the children born if the husband, who is eligible to marry a slave, remains married to the slave woman after discovering her status?

Primary text

If the husband accepts continuing the marriage, this is permissible because marrying a slave is lawful for him. Any child born afterward is a slave belonging to her master. This is because the impediment to the children's enslavement was the husband's mistaken belief in their freedom, which has now been removed by knowledge of the truth.