עֶרְוַ֥ת אֲחִֽי־אָבִ֖יךָ לֹ֣א תְגַלֵּ֑ה אֶל־אִשְׁתּוֹ֙ לֹ֣א תִקְרָ֔ב דֹּדָֽתְךָ֖ הִֽוא׃ (ס)
Thou shalt not uncover the nakedness of thy fathers brother, thou shalt not approach to his wife: she is thine aunt.
Targum Jonathan on Leviticus
The nakedness of thy father's brother thou shalt not dishonour, nor come nigh to his wife carnally; she is the wife of thy father's brother.