Do not have sexual relations with your daughter's daughter

'The nakedness of your son's daughter or your daughter's daughter, their nakedness you shall not uncover; for their nakedness is yours.

Hebrew

עֶרְוַת בַּת־בִּנְךָ אוֹ בַת־בִּתְּךָ לֹא תְגַלֶּה עֶרְוָתָן כִּי עֶרְוָתְךָ הֵנָּה׃ ס ‬

Greek

ἀσχημοσύνην θυγατρὸς υἱοῦ σου ἢ θυγατρὸς θυγατρός σου οὐκ ἀποκαλύψεις τὴν ἀσχημοσύνην αὐτῶν ὅτι σὴ ἀσχημοσύνη ἐστίν

• Parashah: Acharei Mot
• Sefer HaChinuch: 194
• Mishneh Torah: Holiness — Forbidden Sexual Relations

• Leviticus 18:10

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