So the field and its cave were deeded by the Hittites to Abraham as a burial site.
We have here the conclusion of the treaty between Abraham and Ephron about the burying-place. The bargain was publicly made before all the neighbours, in the presence and audience of the sons of Heth, Gen 23:16, Gen 23:17. Note, Prudence, as well as justice, directs us to be fair, and open, and above-board, in our dealings.
Commenting on Genesis 23:16-20
PURCHASE OF A BURYING-PLACE. (Gen. 23:3-20) Abraham stood up, &c.--Eastern people are always provided with family burying-places; but Abraham's life of faith--his pilgrim state--had prevented him acquiring even so small a possession (Act 7:5). spake unto the sons of Heth--He bespoke their kind offices to aid him in obtaining possession of a cave that belonged to Ephron--a wealthy neighbor.
Commenting on Genesis 23:3-20
And the field, and the cave that [is] therein, were made sure unto Abraham for a possession of a buryingplace by the sons of Heth. (f) That is, all the people confirmed the sale.