Do not have sexual relations with a woman and her daughter

'You shall not uncover the nakedness of a woman and of her daughter, nor shall you take her son's daughter or her daughter's daughter, to uncover her nakedness; they are blood relatives. It is lewdness.

Hebrew

יז עֶרְוַת אִשָּׁה וּבִתָּהּ, לֹא תְגַלֵּה: אֶת-בַּת-בְּנָהּ וְאֶת-בַּת-בִּתָּהּ, לֹא תִקַּח לְגַלּוֹת עֶרְוָתָהּ--שַׁאֲרָה הֵנָּה, זִמָּה הִוא.

Greek

17 ἀσχημοσύνην γυναικὸς καὶ θυγατρὸς αὐτῆς οὐκ ἀποκαλύψεις· τὴν θυγατέρα τοῦ υἱοῦ αὐτῆς καὶ τὴν θυγατέρα τῆς θυγατρὸς αὐτῆς οὐ λήμψῃ ἀποκαλύψαι τὴν ἀσχημοσύνην αὐτῶν· οἰκεῖαι γάρ σού εἰσιν, ἀσέβημά ἐστιν.

• Parashah: Acharei Mot
• Sefer HaChinuch: 203
• Mishneh Torah: Holiness — Forbidden Sexual Relations

• Leviticus 18:17

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