Nehemiah 10:31 Midrash

וַאֲשֶׁ֛ר לֹא־נִתֵּ֥ן בְּנֹתֵ֖ינוּ לְעַמֵּ֣י הָאָ֑רֶץ וְאֶת־בְּנֹ֣תֵיהֶ֔ם לֹ֥א נִקַּ֖ח לְבָנֵֽינוּ׃

and that we would not give our daughters unto the peoples of the land, nor take their daughters for our sons;

Read midrashic interpretation of Nehemiah 10:31: and classical rabbinic exegesis.