וַיִּבְחַר־ל֣וֹ ל֗וֹט אֵ֚ת כָּל־כִּכַּ֣ר הַיַּרְדֵּ֔ן וַיִּסַּ֥ע ל֖וֹט מִקֶּ֑דֶם וַיִּפָּ֣רְד֔וּ אִ֖ישׁ מֵעַ֥ל אָחִֽיו׃
So Lot chose him all the plain of the Jordan; and Lot journeyed east; and they separated themselves the one from the other.
Read halakhic rulings (Jewish law) on Genesis 13:11: and classical halakhic sources.