A man was unfaithful to his wife and felt guilty. He came to the prophet and confessed. Muhammad (Peace and all that) turned away, acting as though he had not heard the man. The guilty party followed Muhammad and confessed again. Again, Muhammad turned away from him. The man pursued God’s vicegerent and confessed a third time. Muhammad then asked: “What do you seek by way of this confession?”
The man replied: “I wish to be purified.”
He was then stoned to death. (Read more from Muslim Mouse asks the tough questions)