Study Yevamot folio 55A with parallel Hebrew-English text, traditional commentary, and modern study tools. Free access to Babylonian Talmud online.
Apparently, this Mishnah indicates that his wife’s sister, whether from the father, i.e., a paternal sister, or from the mother, i.e., a maternal sister, is forbidden. From where do we derive this halakha that the prohibition applies even to his wife’s maternal sister? The Talmud responds: It is
The Talmud challenges the validity of this source: And let it be derived from the halakha with regard to his aunt: Just as the prohibition with regard to his aunt applies only to the wife of his father’s brother from his father but not from his mother, i.e., the wife of his father’s paternal brothe
The Talmud counters: On the contrary, he should derive the halakha in this instance from the case of his aunt, as he thereby derives the halakha in a matter prohibited through betrothal from another matter prohibited through betrothal. The Talmud concludes: Rather, the halakha of a wife’s sister i
The Talmud asks: And in the case of a brother’s wife itself, from where do we derive that the prohibition applies to the wife of both a paternal and a maternal brother? As it is taught in a baraita: “You shall not uncover the nakedness of your brother’s wife” (Leviticus 18:16), which indicates: Whet
The baraita elaborates: Do you say the prohibition applies whether she is the wife of one’s brother from his father or from his mother, i.e., whether she is the wife of one’s paternal brother or maternal brother? Or perhaps it is only the wife of one’s brother from his father and not from his mothe