Numbers 36:5-7

5And Moses commanded the children of Israel according to the word of the Lord, saying, The tribe of the sons of Joseph hath said well.

6This is the thing which the Lord doth command concerning the daughters of Zelophehad, saying, Let them marry to whom they think best; only to the family of the tribe of their father shall they marry.1

7So shall not the inheritance of the children of Israel remove from tribe to tribe: for every one of the children of Israel shall keep himself to the inheritance of the tribe of his fathers.2