Matthew 27:6

3 Then Judas, who betrayed him, when he saw that he was condemned, repented himself, and brought back the thirty pieces of silver to the chief priests and elders,

4 saying, I have sinned in that I betrayed innocent blood. But they said, What is that to us? see thou [to it].

5 And he cast down the pieces of silver into the sanctuary, and departed; and he went away and hanged himself.

6 And the chief priests took the pieces of silver, and said, It is not lawful to put them into the treasury, since it is the price of blood.

7 And they took counsel, and bought with them the potter`s field, to bury strangers in.

8 Wherefore that field was called, the field of blood, unto this day.

9 Then was fulfilled that which was spoken through Jeremiah the prophet, saying, And they took the thirty pieces of silver, the price of him that was priced, whom [certain] of the children of Israel did price;