וַיִּקְרָ֥א יִצְחָ֛ק אֶֽל־יַעֲקֹ֖ב וַיְבָ֣רֶךְ אֹת֑וֹ וַיְצַוֵּ֙הוּ֙ וַיֹּ֣אמֶר ל֔וֹ לֹֽא־תִקַּ֥ח אִשָּׁ֖ה מִבְּנ֥וֹת כְּנָֽעַן׃
And Isaac called Jacob, and blessed him, and charged him, and said unto him: ‘Thou shalt not take a wife of the daughters of Canaan.
Read halakhic rulings (Jewish law) on Genesis 28:1: and classical halakhic sources.