In the eyes of humans in general, insanity is defined as a severe mental or nervous disorder. Historically this concept has been used in various ways. In the medical world more often used the term mental disorder. The word madness is often used to express insanity, or very strange behavior. In that sense means abnormalities in the way of thinking and behaving that are less fair.
Madness is the loss of balance of mind due to stress or personal problems experienced by a person that resulted in his mind uncontrollable and eventually made his mind is insane, behave strangely (unnatural like ordinary people). In the book Strategic Qur'an, Abdul Ghafur (2004: 29) describes that in Arabic, a madman called majnun formed from the word janna which means cover or closed. Therefore, the invisible subtle being is called the genie. The madman in his original sense is not the one who is mindless, but the person whose mind is incapable of illuminating illuminates his darkness or his closeness from divine light.
Thus majnun is everyone who tends to indulge his lust, so that his mind is closed, not working. Imam Muslim narrated a hadith that: "One day the Prophet SAW passed a group of friends who were gathering.The Prophet SAW asked: 'O Messenger, this is a madman who is raging.Therefore we are gathered here.A Rasul SAW said:' This man Not crazy, he is getting misfortune ', the Apostle SAW even asked again,' Do you know who the madman is really crazy? 'Then Rasul SAW explained:' we do not know 'Then the Apostle explained:' Mad people are people who Walking arrogantly, looking at people with disdainful views, puffing out their chests, hoping for heaven while doing evil to Him, whose ugliness makes others insecure and the good is never expected. "