نهج البلاغه
Amir al-Mu'minin, peace be upon him, said : There are two kinds of
workers in the world. One is a person who works in this world for this world and his work of this world keeps him unmindful of the next world. He is afraid
of destitutionfor those he will leave behind but feels himself safe about it. So, he spends his life after the food of others. The other is one who works in
this world for what is to come hereafter, and he secures his share of this world
without effort, Thus, he gets both the benefits together and become the owner
of both the houses together. In this way, he is prestigious before Allah. If
asks Allah anything He does not deny him.