Deuteronomy 2:4-5

4Give this message to the Israelites: “You will soon go through the country that belongs to Esau's descendants. They have the same ancestors that you have. They live in Seir. They will be afraid of you, so be very careful.

5Do not attack them at all. I will not give any of their land to you, not even enough ground to put your foot on. I have given the hills around Mount Seir to Esau, for his descendants to live there.