Prestige (in the language): strengthening, embarrassment, and stopping incest. And the piety, by breaking the pioneer: the embarrassing man, and the piety is originally as we mentioned, and then restore to stop the permissible and permissible. And piety (in convention): is to avoid suspicions; For fear of falling into taboos. Ibn al -Qayyim explained the difference between piety and asceticism, and he said: (Asceticism left what is not beneficial in the Hereafter.