Num Numbers, chapter Book of Numbers, chapter 33
And ye shall distribute HaAretz by goral for an inheritance among your mishpekhot; and to the more numerous ye shall give the larger nachalah, and to the fewer in number ye shall give the smaller nachalah; every manʼs nachalah shall be in the place where his goral falleth; according to the mattot (tribes of) Avoteichem ye shall inherit.