6 This is what the LORD commands for Zelophehad’s daughters: They may marry anyone they please as long as they marry within their father’s tribal clan.

Read Numbers 36:6 Using Other Translations

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.
This is what the LORD commands concerning the daughters of Zelophehad, 'Let them marry whom they think best, only they shall marry within the clan of the tribe of their father.
This is what the LORD commands concerning the daughters of Zelophehad: Let them marry anyone they like, as long as it is within their own ancestral tribe.