Do not have sexual relations with your father's brother's wife

'You shall not uncover the nakedness of your father's brother; you shall not approach his wife, she is your aunt.

Hebrew

יד עֶרְוַת אֲחִי-אָבִיךָ, לֹא תְגַלֵּה: אֶל-אִשְׁתּוֹ לֹא תִקְרָב, דֹּדָתְךָ הִוא. {ס}

Greek

14 ἀσχημοσύνην ἀδελφοῦ τοῦ πατρός σου οὐκ ἀποκαλύψεις καὶ πρὸς τὴν γυναῖκα αὐτοῦ οὐκ εἰσελεύσῃ· συγγενὴς γάρ σού ἐστιν.

• Parashah: Acharei Mot
• Sefer HaChinuch: 200
• Mishneh Torah: Holiness — Forbidden Sexual Relations

• Leviticus 18:14

Enumeration and classification from BibleData. The Greek is the Septuagint reading of the same verse, carried by the source for comparison.