Charles Ellicott Commentary Numbers 27:7

"The daughters of Zelophehad speak right: thou shalt surely give them a possession of an inheritance among their father`s brethren; and thou shalt cause the inheritance of their father to pass unto them." — Numbers 27:7 (ASV)

You shall surely give them ... — The pronoun them is in the masculine gender in the Hebrew. Either the reference must be to the sons of Zelophehad’s daughters, or the daughters must be regarded in the light of sons.