Genesis 23:16-18

Thomson(i) 16 And Abraham hearkened to Ephron; and Abraham paid down to Ephron the money which he mentioned in the hearing of the children of Chet, four hundred didrachms of silver current among merchants. 17 So the field of Ephron including the double cave which is situate before Mambre, the field and the cave in it and all the wood in the field and all within the bounds thereof round about were conveyed 18 to Abraham for a possession in the presence of the children of Chet and of all who entered the city.