Shiva, Varuna, Yama, Durga-Parvati, we already said it, are deities of IE origin, the rituals concerning fire, soma and the person of the king are equally of IE if not Indo-Iranian origin. But it is now obvious that the Indo-Aryans, upon arriving in India, have amply harvested the Harappan heritage and included its ritual customs (construction of hearth-altars, rites inside buildings, use of the stellar vestment, ritual baths, fixation of feasts on the stellar equinoxes…) in their own religion.