אָסוּר לְהִתְיַחֵד עִם עֶרְוָה מִן הָעֲרָיוֹת בֵּין זְקֵנָה בֵּין יַלְדָּה שֶׁדָּבָר זֶה גּוֹרֵם לְגַלּוֹת עֶרְוָה. חוּץ מֵהָאֵם עִם בְּנָהּ וְהָאָב עִם בִּתּוֹ וְהַבַּעַל עִם אִשְׁתּוֹ נִדָּה. וְחָתָן שֶׁפֵּרְסָה אִשְׁתּוֹ נִדָּה קֹדֶם שֶׁיִּבְעל אָסוּר לְהִתְיַחֵד עִמָּהּ אֶלָּא הִיא יְשֵׁנָה בֵּין הַנָּשִׁים וְהוּא יָשֵׁן בֵּין הָאֲנָשִׁים. וְאִם בָּא עָלֶיהָ בִּיאָה רִאשׁוֹנָה וְאַחַר כָּךְ נִטְמֵאת מֻתָּר לְהִתְיַחֵד עִמָּהּ:
It is forbidden to enter into privacy with any of the woman forbidden as ariot, even if she is elderly or a young girl, for this leads to forbidden relations. [The only] exceptions are a woman and her son, a father and his daughter, and a husband with his wife who is in the niddah state. When a bridegroom's wife menstruates before he engages in relations with her, it is forbidden for him to enter into privacy with her. Instead, she should sleep among [other] women and he should sleep among [other] men. If they engaged in relations once and afterwards, she became impure, he is permitted to enter into privacy with her.
