Genesis 23:13-20

13 And he spoke unto Ephron in the audience of the people of the land, saying, But if thou wilt give it, I pray thee, hear me; I will give thee money for the field; take it of me, and I will bury my dead there.
14 And Ephron answered Abraham, saying unto him,
15 My lord, hearken unto me: the land is worth four hundred shekels of silver; what is that between me and thee? bury therefore thy dead.
16 Then Abraham hearkened unto Ephron, and Abraham weighed to Ephron the silver, which he had named in the audience of the sons of Heth, four hundred shekels of silver, current money with the merchant.
17 And the field of Ephron, which was in Machpelah, which was before Mamre, the field and the cave which was therein, and all the trees that were in the field that were in all the borders round about were made sure
18 unto Abraham for a possession in the presence of the sons of Heth, before all that went in at the gate of his city.
19 And after this, Abraham buried Sarah his wife in the cave of the field of Machpelah before Mamre; the same is Hebron in the land of Canaan.
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.