'Dissimulation has situations [necessitating it]. Whoever lifts them from their rightful places, they will not uphold him. The explanation of what should be dissimulated is like when there is an evil people whose outer rulings and actions oppose rightful rulings and actions, so everything that a believer does among them in a situation [necessitating] dissimulation is permissible, as long as it does not lead to the corruption of his faith.'