Matthew 27:3-7

Now, when Judas, the betrayer, saw that Jesus had been sentenced to death, remorse filled his heart. He returned the thirty pieces of silver to the chief priests and religious leaders, saying, “I have sinned by betraying an innocent man.” They replied, “Why are you bothering us? That’s your problem.” Then Judas flung the silver coins inside the temple and went out and hanged himself. The chief priests, picking up the pieces of silver, said, “We can’t keep this, for it’s unlawful to put blood money into the temple treasury.” So after some deliberation, they decided to purchase the potter’s field of clay, to use as a cemetery for burying strangers.