Anas reported that a person was charged with fornication with the slavegirl of Allaah's Messenger (sallAllaahu alayhi wa sallam). Thereupon Allaah's Messenger (sallAllaahu alayhi wa sallam) said to 'Ali: Go and strike his neck. 'Ali came to him and he found him in a well making his body cool. 'Ali said to him: Come out, and as he took hold of his hand and brought him out, he found that his sexual organ had been cut. Hadrat 'Ali refrained from striking his neck. He came to Allaah's Prophet (sallAllaahu alayhi wa sallam) and said: Allaah's Messenger, he has not even the sexual organ with him.