Ye are witnesses
Genesis 23:16-18
16
And Abraham hearkeneth unto Ephron, and Abraham weigheth to Ephron the silver which he hath spoken of in the ears of the sons of Heth, four hundred silver shekels, passing with the merchant.
17
And established are the field of Ephron, which [is] in Machpelah, which [is] before Mamre, the field and the cave which [is] in it, and all the trees which [are] in the field, which [are] in all its border round about,
18
to Abraham by purchase, before the eyes of the sons of Heth, among all entering the gate of his city.
Jeremiah 32:10-12
10
And I write in a book, and seal, and cause witnesses to testify, and weigh the silver in balances;
11
And I take the purchase-book, the sealed one, according to law and custom, and the open one.
12
And I give the purchase-book unto Baruch son of Neriah, son of Maaseiah, before the eyes of Hanameel, my uncle's son, and before the eyes of the witnesses, those writing in the purchase-book, before the eyes of all the Jews who are sitting in the court of the prison.