Numbers 36:6-8

36:6 This is what the Lord has commanded for Zelophehad’s daughters: ‘Let them marry whomever they think best, only they must marry within the family of their father’s tribe. 36:7 In this way the inheritance of the Israelites will not be transferred from tribe to tribe. But every one of the Israelites must retain the ancestral heritage. 36:8 And every daughter who possesses an inheritance from any of the tribes of the Israelites must become the wife of a man from any family in her father’s tribe, so that every Israelite may retain the inheritance of his fathers.