Numbers 36:1-3

1Now the chief fathers of the families of the children of Gilead the son of Machir, the son of Manasseh, of the families of the sons of Joseph, came near and spoke before Moses and before the leaders, the chief fathers of the children of Israel.

2And they said: “The Lord commanded my lord Moses to give the land as an inheritance by lot to the children of Israel, and my lord was commanded by the Lord to give the inheritance of our brother Zelophehad to his daughters.

3Now if they are married to any of the sons of the other tribes of the children of Israel, then their inheritance will be taken from the inheritance of our fathers, and it will be added to the inheritance of the tribe into which they marry; so it will be taken from the lot of our inheritance.