פּירוש אויף במדבר 5:28

“She shall be unharmed and able to retain seed” [5:28]. When the woman was justified and had not engaged in illicit sex and had to drink the water in the Temple, the Holy One gives her that if she had not been able to have children, now she would be able to have children with her husband, because of the disgrace she had endured. If she had children with great pain, she would now have children easily. If she only had daughters previously, she would now have only sons with her husband. When she previously had dark and swarthy children, she would now have light haired and beautiful children, and she would have children who would be righteous.²²Rashi, Numbers, 5:28.

ואם לא נטמאה האשה AND IF THE WOMAN WAS NOT DEFILED on the occasion of this secluding herself with this man,

And shall bear seed. This is in juxtaposition to “this is the law (Torah) of jealousies,” which teaches that if she is pure she will have righteous sons who will know the Torah.