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.