Numbers 35:27
And the giver of punishment, meeting him outside the walls of the town, puts him to death, he will not be responsible for his blood:
Exodus 22:2
If a thief is taken in the act of forcing his way into a house, and his death is caused by a blow, the owner of the house is not responsible for his blood.
Deuteronomy 19:6
For if not, he who has the right of punishment may go running after the taker of life in the heat of his wrath, and overtake him because the way is long, and give him a death-blow; though it is not right for him to be put to death because he was not moved by hate.
Deuteronomy 19:10
So that in all your land, which the Lord your God is giving you for your heritage, no man may be wrongly put to death, for which you will be responsible.