Genesis 23:18

¹⁶And Abraham hearkened to Ephron, and Abraham rendered to Ephron the money, which he mentioned in the ears of the sons of Heth, four hundred didrachmas of silver approved with merchants.

¹⁷And the field of Ephron, which was in Double Cave, which is opposite Mamre, the field and the cave, which was in it, and every tree which was in the field, and whatever is in its borders round about, were made sure

— Genesis 23:18 —

¹⁹After this Abraham buried Sarah his wife in the Double Cave of the field, which is opposite Mamre, this is Hebron in the land of Canaan.

²⁰So the field and the cave which was in it were made sure to Abraham for possession of a burying place, by the sons of Heth.