When they kept on questioning him, he straightened up and said to them, "Let any one of you who is without sin be the first to throw a stone at her." (NIV)
However, when they persisted with their question, He raised Himself up and said, Let him who is without sin among you be the first to throw a stone at her. (AMP)
So when they continued asking him, he lifted up himself, and said unto them, He that is without sin among you, let him first cast a stone at her. (KJV)