Study Yevamot folio 32B with parallel Hebrew-English text, traditional commentary, and modern study tools. Free access to Babylonian Talmud online.
R' Abbahu said: R' Yosei concedes that a prohibition takes effect where another prohibition already exists when it is an expanded prohibition. An expanded prohibition is a prohibition that has a greater scope than the original prohibition, either because it applies with greater severity or because
The Talmud asks: This works out well in cases where the living brother married his wife first, and her sister became forbidden to him as a wife’s sister, and then afterward the brother who was subsequently deceased married his wife’s sister. In that case it is possible to say: Since a prohibition wa
However, where the deceased brother married first and afterward the living brother married her sister, in what way is there a prohibition that adds? No additional individuals were incorporated into the prohibition as a result of the marriage of the living brother with the sister, since the prohibit
And if you would say: Since he himself now married a sister he became prohibited to all of the other sisters, as opposed to the prior state of affairs where only his brother was married to one of the sisters and all of the other sisters were permitted to him, and therefore an additional prohibition
Rather, Rava said that when R' Yosei stated in the baraita that the man is liable due to both prohibitions, for a brother’s wife and for a wife’s sister, he meant to say: I ascribe to him liability as though he transgressed twice, since indeed he violated two prohibitions, yet he is liable to recei