بررسی تغییرات الگوی فرهنگی پاکی و ناپاکی در ایران

one of the great events in the history of iran is the emergence and spread of islam within the early hegira centuries.  the result of the interaction between islam and iran was transformations in many cultural dimensions and indices. this research states the problem of the islamization of iranian lifestyle andthe culture of purity and impurity, in particular.in this article,interpretive-analytic methods are used to explore the changes tocleanliness system. accordingly, the cultural patterns of purity and impurity of animals, nature, and things in iran in pre-islamic age wereinitially studied. then the iranian interactions wereexplained.in its new conceptualization of purity and impurity, islam announced all animals as beneficial which consequently modified some of zoroastrian cultural patterns. for example, dogs and pigs were considered impure (najis) while snakes and vermin are not demonic in islam. however, in certain cases including halal meat animals like horses, cows, etc, we observe the consistency of previous patterns.about nature, the sacredness of fire underwent a transformationwhile the concept of earth remained the same. nevertheless, water experienced both consistency and modification in its cultural significance.in case of objects and things, we observe the restriction of filthiness in case of clothes, house furniture, wooden products, corpse touch, etc.