וַיֹּ֨אמֶר מֹשֶׁ֜ה אֲלֵהֶ֗ם אִם־יַעַבְר֣וּ בְנֵי־גָ֣ד וּבְנֵי־רְאוּבֵ֣ן ׀ אִ֠תְּכֶם אֶֽת־הַיַּרְדֵּ֞ן כָּל־חָל֤וּץ לַמִּלְחָמָה֙ לִפְנֵ֣י יְהוָ֔ה וְנִכְבְּשָׁ֥ה הָאָ֖רֶץ לִפְנֵיכֶ֑ם וּנְתַתֶּ֥ם לָהֶ֛ם אֶת־אֶ֥רֶץ הַגִּלְעָ֖ד לַאֲחֻזָּֽה׃
And Moses said unto them: ‘If the children of Gad and the children of Reuben will pass with you over the Jordan, every man that is armed to battle, before the LORD, and the land shall be subdued before you, then ye shall give them the land of Gilead for a possession;
Read halakhic rulings (Jewish law) on Numbers 32:29: and classical halakhic sources.