Hadith.942 -”All eyes will shed tears on the Day of Judgment except for three types of eyes: an eye that wept out of the fear of Allah سبحانه وتعالى, an eye that was lowered (in modesty) from what Allah سبحانه وتعالى has forbidden, and an eye that stayed awake guarding in the cause of Allah سبحانه وتعالى.”