Leviticus 20:14

וְאִ֗ישׁ אֲשֶׁ֨ר יִקַּ֧ח אֶת־אִשָּׁ֛ה וְאֶת־אִמָּ֖הּ זִמָּ֣ה הִ֑וא בָּאֵ֞שׁ יִשְׂרְפ֤וּ אֹתוֹ֙ וְאֶתְהֶ֔ן וְלֹא־תִהְיֶ֥ה זִמָּ֖ה בְּתוֹכְכֶֽם׃

ὃς ἐὰν λάβ καὶ τὴν μητέρα αὐτῆς, ἀνόμημά ἐστιν· ἐν πυρὶ κατακαύσουσιν αὐτὸν καὶ αὐτάς, καὶ οὐκ ἔσται ἀνομία ἐν ὑμῖν.

Greek text from Swete's edition, CC BY-SA 4.0

Y el que tomare mujer y á la madre de ella, comete vileza: quemarán en fuego á él y á ellas, porque no haya vileza entre vosotros.

If a man marries both a woman and her mother, it is depraved. Both he and they must be burned in the fire, so that there will be no depravity among you.