Matthew 27:3-7

Then when Judas, his betrayer, saw that Jesus was condemned, he changed his mind and brought back the thirty pieces of silver to the chief priests and the elders, saying, “I have sinned by betraying innocent blood.” They said, “What is that to us? See to it yourself.” And throwing down the pieces of silver into the temple, he departed, and he went and hanged himself. But the chief priests, taking the pieces of silver, said, “It is not lawful to put them into the treasury, since it is blood money.” So they took counsel and bought with them the potter’s field as a burial place for strangers.