Do not die and depart from this world until you have formed a good opinion about God............

Imam Sadiq (a.s) quoted the following from Prophet David (a.s): “O' God! One who does not have a good opinion about You has no faith in You even if he has gotten to know you.” 

In Rauzat al-Vaezeen it is narrated that the Prophet of God (a.s) said:

“Do not die and depart from this world until you have formed a good opinion about God, since this is the price for Heaven.” 

Imam Sadiq (a.s) said: “Two men who were imprisoned were freed during the time of the Prophet Moses (a.s). One of them was large and chubby, and the other one was very thin. Moses asked the chubby man the reason for his being fat. He replied: “From having a good opinion about God.” Then he asked the other man the reason for being so skinny. He replied: “From fearing God.” Then Moses (a.s) raised 

his hands towards the sky and asked God to inform him which of the two were nobler. God revealed to him that the one who had a good opinion about God was nobler.