Deuteronomy 19:21
You must not show pity; the principle will be a life for a life, an eye for an eye, a tooth for a tooth, a hand for a hand, and a foot for a foot.
Deuteronomy 19:13
You must not pity him, but purge out the blood of the innocent from Israel, so that it may go well with you.
Exodus 21:23-25
But if there is serious injury, then you will give a life for a life,
Leviticus 24:17-21
"'If a man beats any person to death, he must be put to death.
Matthew 5:38-39
"You have heard that it was said, 'An eye for an eye and a tooth for a tooth.'
Treasury of Scripture Knowledge
Summary
                            And thine eye shall not pity; but life shall go for life, eye for eye, tooth for tooth, hand for hand, foot for foot.                        
                    Life shall
General references
Bible References
Life shall
                                        Exodus 21:23                                        
                                                                                                                                But if there is serious injury, then you will give a life for a life,
                                    
                                        Leviticus 24:17                                        
                                                                                                                                "'If a man beats any person to death, he must be put to death.
                                    
                                        Matthew 5:38                                        
                                                            
                        "You have heard that it was said, 'An eye for an eye and a tooth for a tooth.'
                                    General references
                                        Leviticus 24:19                                        
                                                                                                                                If a man inflicts an injury on his fellow citizen, just as he has done it must be done to him  -- 
                                    
                                        Deuteronomy 5:20                                        
                                                                                                                                You must not offer false testimony against another.
                                    
                                        Deuteronomy 25:12                                        
                                                            
                        then you must cut off her hand  --  do not pity her.