Genesis 23:13-20

13 and said to Ephron, so that everyone could hear, "May I ask you, please, to listen. I will buy the whole field. Accept my payment, and I will bury my wife there."
14 Ephron answered
15 "Sir, land worth only four hundred pieces of silver - what is that between us? Bury your wife in it."
16 Abraham agreed and weighed out the amount that Ephron had mentioned in the hearing of the people - four hundred pieces of silver, according to the standard weights used by the merchants.
17 That is how the property which had belonged to Ephron at Machpelah east of Mamre, became Abraham's. It included the field, the cave which was in it, and all the trees in the field up to the edge of the property.
18 It was recognized as Abraham's property by all the Hittites who were there at the meeting.
19 Then Abraham buried his wife Sarah in that cave in the land of Canaan
20 So the field which had belonged to the Hittites, and the cave in it, became the property of Abraham for a burial ground.
Scripture taken from the Good News Translation - Second Edition, Copyright 1992 by American Bible Society. Used by Permission.