Reference for Sanhedrin 56:1

גוילי בעו מיניה מהו שיעיד אדם באשת חורגו

AND A STEP-FATHER, HE, HIS SON AND SON-IN-LAW. HIS SON! But that is hisbrother!<span class="x" onmousemove="('comment',' Who has already been mentioned. ');">¹¹</span>

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