Genesis 23:19

Abraham listened to Ephron. Abraham weighed to Ephron the silver which he had named in the hearing of the children of Heth, four hundred shekels of silver, according to the current merchants’ standard.

So the field of Ephron, which was in Machpelah, which was before Mamre, the field, the cave which was in it, and all the trees that were in the field, that were in all of its borders, were deeded

to Abraham for a possession in the presence of the children of Heth, before all who went in at the gate of his city.

The field, and the cave that is in it, were deeded to Abraham by the children of Heth as a possession for a burial place.