'There are six signs of a person of conviction: he has truly attained conviction in Allah and believed in Him, he is convinced that Death is true and he is wary of it, he is convinced that Resurrection is true and he fears shame, he is convinced that Heaven is true and he longs for it, he is convinced that Hell is true and his endeavour is apparent in his wanting to be saved from it, he is convinced that the Account is true and so he takes account of himself.'