Numbers 36:9

9 And the inheritance shall not go about from one tribe to another, but the children of Israel shall steadfastly continue each in his own inheritance.

Numbers 36:9 Meaning and Commentary

Numbers 36:9

Neither shall the inheritance remove from one tribe to another,
&c.] Which was one end of the year of jubilee, but that did not sufficiently secure it without this law, as this case shows:

but everyone of the tribes of Israel shall keep himself to his own
inheritance;
the chief view of which was, that it might clearly appear of what tribe and family the Messiah sprang when he came.

Numbers 36:9 In-Context

7 So shall not the inheritance of the children of Israel go about from tribe to tribe, for the children of Israel shall steadfastly continue each in the inheritance of his family's tribe.
8 And whatever daughter is heiress to a property of the tribes of the children Israel, women shall be married each to one of her father's tribe, that the sons of Israel may each inherit the property of his father's tribe.
9 And the inheritance shall not go about from one tribe to another, but the children of Israel shall steadfastly continue each in his own inheritance.
10 As the Lord commanded Moses, so did they to the daughters of Salpaad.
11 So Thersa, and Egla, and Melcha, and Nua, and Malaa, the daughters of Salpaad, married their cousins;

The Brenton translation of the Septuagint is in the public domain.