Sometimes Satan encourages people to give more attention to optional matters to make them miss the mandatory duties. For example, he prompts a person to proceed on a pilgrimage to the mausoleum of Imam Reza (a.s.). he convinces him that performing this optional pilgrimage will bring him lots of reward in the Hereafter. The person neglects his mandatory duty of providing for his old parents and family and proceeds on the pilgrimage.

Satan thus makes people overlook mandatory duties in the performance of the optional.