How perfect it would be if the Shiites rich change their wealth into the works and stuffs that the Almighty Allah has asked us to do.it is a pity that millions and billions of money is left from a man and even and tinge of that wealth won,t be mentioned in their letter of action. Imam Ali (AS) says: the only thing that is left from all the wealth they used to have after their death is the Regret and there is no cure for it. This regret is along with the rich in the purgatory and the resurrection day and counting and considering them is also difficult.
source : erfan.ir