A prophet(AS) once was passing by a small stone. He noticed that a lot of water was coming out of the stone. The prophet asked the stone; “Why so much water coming out of you?
Stone said “I have heard that the hell will be filled with men and stone.(wa Goomo Nasa wal Hijarah...) What you see coming out of me is tears of grief. The prophet feeling bad for the stone supplicated for his relief and his supplication was accepted
While after, the prophet was passing by the same stone. He noticed that, still lots of water coming from the stone. He asked the stone, why are you crying this time?
Stone said; first time it was the cry of fear this time is the cry of thank fullness
Moral of the story; Human heart is similar to stone, crying make it soft and tender, cry of happiness or sadness both soften the heart laughter on the other hand make it harder