5 Then at the LORD’s command Moses gave this order to the Israelites: “What the tribe of the descendants of Joseph is saying is right.

Read Numbers 36:5 Using Other Translations

And Moses commanded the children of Israel according to the word of the LORD, saying, The tribe of the sons of Joseph hath said well.
And Moses commanded the people of Israel according to the word of the LORD, saying, "The tribe of the people of Joseph is right.
So Moses gave the Israelites this command from the LORD : “The claim of the men of the tribe of Joseph is legitimate.