1 Samuel 12:3-5

3Here I am: testify against me before Jehovah, and before his anointed. Whose ox have I taken? or whose ass have I taken? or whom have I defrauded? whom have I injured? or of whose hand have I received any ransom and blinded mine eyes therewith? and I will restore it to you.

4And they said, Thou hast not defrauded us, and thou hast not injured us, neither hast thou taken aught of any man's hand.

5And he said to them, Jehovah is witness against you, and his anointed is witness this day, that ye have not found aught in my hand! And [the people] said, [He is] witness!