The Importance of Untouchability in Islam and Christianity

Islam and Christian are very watertight, Abrahamic religious frameworks where there is no room for any maneuvering or any discussions. If that keeps a green signal that there is nothing of that sort exists in these two religions then it actually you know gives a different kind of keeps worth to a different set of question which asks few obvious questions. Whether if untouchability does not exist or caste based hierarchies do not exist in Islam and Christianity needs to be deliberated upon by an expert. And then can somebody demand this silica status or not within the reservation framework.