R. V. Russell, The Tribes and Castes of the Central Provinces of India…
“ Mitra is born from a rock; he makes water flow from the rock by striking it with an arrow, makes an alliance with the sun, and enters into a struggle with a bull, whom he conquers and sacrifices. The sacrifice of the bull appears to indicate that the worship of Mitra in its most ancient form was that of a sacred bull, conjoined to or representing the sun, which was sacrificed as a god, and its flesh and blood eaten in a sacrificial meal. ”
