Deuteronomy 2:3-6

3'You have been traveling around this mountain country long enough. Turn northward

4and command the people, "You are about to pass through the territory of your brothers, the people of Esau, who live in Seir; and they will be afraid of you. So be very careful.

5Do not contend with them, for I will not give you any of their land, no, not so much as for the sole of the foot to tread on, because I have given Mount Seir to Esau as a possession.

6You shall purchase food from them with money, that you may eat, and you shall also buy water from them with money, that you may drink.