Deuteronomy 2:4-5

4Give the people these orders: ‘You are about to pass through the territory of your relatives the descendants of Esau, who live in Seir. They will be afraid of you, but be very careful. 5Do not provoke them to war, for I will not give you any of their land, not even enough to put your foot on. I have given Esau the hill country of Seir as his own.