וַיֹּ֣אמֶר יְהוּדָה֩ לְשִׁמְע֨וֹן אָחִ֜יו עֲלֵ֧ה אִתִּ֣י בְגוֹרָלִ֗י וְנִֽלָּחֲמָה֙ בַּֽכְּנַעֲנִ֔י וְהָלַכְתִּ֧י גַם־אֲנִ֛י אִתְּךָ֖ בְּגוֹרָלֶ֑ךָ וַיֵּ֥לֶךְ אִתּ֖וֹ שִׁמְעֽוֹן׃
Yehuda berkata kepada Simeon, saudaranya: “Majulah bersamaku ke wilayah bagianku, dan marilah kita berperang melawan orang Kanaan; nanti aku pun akan pergi bersamamu ke wilayah bagianmu.” Maka Simeon pergi bersamanya.
Midrash Aggadah
To Shimon, Shelumiel ben Tzurishaddai. Even though his descendant is Zimri, on whose account 24,000 died in a plague, G-d made peace with him and placed him next to Reuben, who had done repentance (a ba'al t'shuvah). Therefore it is said, "ben tzuri-shaddai," ("Shaddai is my rock")...
Sifrei Devarim
"And to his people shall You bring him": For he (Judah) had drawn him (Shimon) near to himself for inheritance (of the land), as it is written (Judges 1:3) "and Judah said to Shimon his brother: "Go up with me (in battle) for my portion." And sections fell (for inheritance) from the inheritance of the children of Judah to that of the children of Shimon (viz. Joshua 19:9).