Yevamos 14:5-6

Yevamos 14:5

Let’s say that two brothers who have all their senses are married to two sisters, one of whom has congenital deafness and the other of whom has all her senses. If the brother married to the woman with congenital deafness dies, what does the brother married to the woman with all her senses do? The widow goes away because she is his wife’s sister. If the brother married to the woman with all her senses dies, what does the brother married to the woman with congenital deafness do? He must divorce his wife with a get (because his Biblical-level yibum connection trumps his rabbinic-level marriage) and he must perform chalitzah with the widow (as the sister of a woman he divorced).

Yevamos 14:6

Let’s say that two brothers, one of whom has congenital deafness and the other of whom has all his senses, are married to two sisters, one of whom has congenital deafness and the other of whom has all her senses. If the man with congenital deafness is married to the woman with congenital deafness and dies, what does the brother with all his senses married to the woman with all her senses do? She is exempt because she is his wife’s sister. If the man with all his senses is married to the woman with all her senses and dies, what does the brother with congenital deafness married to the woman with congenital deafness do? He must divorce his wife with a get (because his Biblical-level yibum connection trumps his rabbinic-level marriage) and he may never marry his brother’s widow (as the sister of a woman he divorced).