Numbers 12:1

Miriam and Aaron Oppose Moses

12:1 Then Miriam and Aaron spoke against Moses because of the Cushite woman he had married (for he had married an Ethiopian woman).

Numbers 36:6

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.