Numbers 35:31-33

New International Version

³¹ “‘Do not accept a ransom^(A) for the life of a murderer, who deserves to die. They are to be put to death.

³² “‘Do not accept a ransom for anyone who has fled to a city of refuge and so allow them to go back and live on their own land before the death of the high priest.

³³ “‘Do not pollute the land where you are. Bloodshed pollutes the land,^(B) and atonement cannot be made for the land on which blood has been shed, except by the blood of the one who shed it.