Genesis 23:16

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.

And 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.