(As for) those who disbelieve, surely neither their wealth nor their children shall avail them in the least against Allah, and these it is who are the fuel of the fire. [Al Quran 3:10]
He who decreases a grief out of the grieves of this world for his Muslim brother, Allah will decrease for him a grief out of the grieves of the Hereafter.
Paradise and Hellfire disputed together, and Hellfire said:- In me are the mighty and the haughty. Paradise said:- In me are the weak and the poor.
So Allah judged between them, [saying]: You are Paradise, My mercy; through you will show mercy to those I wish. And you are Hellfire, My punishment; through you will punish those I wish, and it is incumbent upon Me that each of you shall have its fill.