Numbers 36:7-9

7No inheritance in Israel is to pass from one tribe to another, for every Israelite shall keep the tribal inheritance of their ancestors.

8Every daughter who inherits land in any Israelite tribe must marry someone in her father’s tribal clan, so that every Israelite will possess the inheritance of their ancestors.

9No inheritance may pass from one tribe to another, for each Israelite tribe is to keep the land it inherits.”