Numbers 36:3-5

Revised Standard Version

³ But if they are married to any of the sons of the other tribes of the people of Israel then their inheritance will be taken from the inheritance of our fathers, and added to the inheritance of the tribe to which they belong; so it will be taken away from the lot of our inheritance. ⁴ And when the jubilee of the people of Israel comes, then their inheritance will be added to the inheritance of the tribe to which they belong; and their inheritance will be taken from the inheritance of the tribe of our fathers.”

⁵ And Moses commanded the people of Israel according to the word of the Lord, saying, “The tribe of the sons of Joseph is right.