Numbers 36:6

This, therefore, doeth the LORD: 'Command the daughters of Zelophehad, saying: let them be wives to whom they themself think best, but in the kindred of the tribe of their fathers shall they marry,

Genesis 24:57-58

And they said, "Let us call the damsel, and wit what she saith to the matter."

Numbers 36:12

of the kindred of the children of Manasseh the son of Joseph: and so they had their inheritance in the tribe of the kindred of their father.

Genesis 24:3

that I may make thee swear by the LORD that is God of heaven and God of the earth, that thou shalt not take a wife unto my son, of the daughters of the Canaanites, among which I dwell.

2 Corinthians 6:14

Set yourselves therefore at large, and bear not a stranger's yoke with the unbelievers. For what fellowship hath righteousness with unrighteousness? What company hath light with darkness?

Treasury of Scripture Knowledge

Summary

This 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.

Bible References

Only to the family

Numbers 36:12
of the kindred of the children of Manasseh the son of Joseph: and so they had their inheritance in the tribe of the kindred of their father.
Genesis 24:3
that I may make thee swear by the LORD that is God of heaven and God of the earth, that thou shalt not take a wife unto my son, of the daughters of the Canaanites, among which I dwell.
2 Corinthians 6:14
Set yourselves therefore at large, and bear not a stranger's yoke with the unbelievers. For what fellowship hath righteousness with unrighteousness? What company hath light with darkness?