Genesis 36:7-8
36:7 because they had too many possessions to be able to stay together and the land where they had settled
was not able to support them because of their livestock.
36:8 So Esau (also known as Edom) lived in the hill country of Seir.
Genesis 25:12
The Sons of Ishmael
25:12 This is the account of Abraham’s son Ishmael, whom Hagar the Egyptian, Sarah’s servant, bore to Abraham.
Deuteronomy 2:5
2:5 Do not be hostile toward them, because I am not giving you any of their land, not even a footprint, for I have given Mount Seir
as an inheritance for Esau.