אֵ֣לֶּה בְנֵי־שֵׁ֔ם לְמִשְׁפְּחֹתָ֖ם לִלְשֹׁנֹתָ֑ם בְּאַרְצֹתָ֖ם לְגוֹיֵהֶֽם׃
These are the sons of Shem, after their families, after their tongues, in their lands, after their nations.
Read halakhic rulings (Jewish law) on Genesis 10:31 from the Mishneh Torah and classical halakhic sources, free online.