Genesis 23:17-20

17So Abraham bought the plot of land belonging to Ephron at Machpelah, near Mamre. This included the field itself, the cave that was in it, and all the surrounding trees.

18It was transferred to Abraham as his permanent possession in the presence of the Hittite elders at the city gate.

19Then Abraham buried his wife, Sarah, there in Canaan, in the cave of Machpelah, near Mamre (also called Hebron).

20So the field and the cave were transferred from the Hittites to Abraham for use as a permanent burial place.