וַיְהִ֣י הַגּוֹרָ֗ל לְמַטֵּ֛ה בְּנֵ֥י יְהוּדָ֖ה לְמִשְׁפְּחֹתָ֑ם אֶל־גְּב֨וּל אֱד֧וֹם מִדְבַּר־צִ֛ן נֶ֖גְבָּה מִקְצֵ֥ה תֵימָֽן׃
And the lot for the tribe of the children of Judah according to their families was unto the border of Edom, even to the wilderness of Zin southward, at the uttermost part of the south.
Read halakhic rulings (Jewish law) on Joshua 15:1: and classical halakhic sources.