Midrash su Geremia 18:16

9) "He has revealed the nakedness of his brother; they shall be childless (aririm)": If they have children, they bury their children; if they have no children, they die without children. And even though there is no proof for this, there is an "intimation" (i.e., Biblical support) for it, viz. (Jeremiah 29:30): "Write down this man as "ariri," etc." We have heard the punishment, but not the exhortation. It is, therefore, written (Jeremiah 18:16): "The nakedness of the wife of your brother you shall not reveal; she is the nakedness of your brother."