Indian religions Brahmanas and the older Upanishads (both presented as discussions on the rituals, mantras and concepts found in the four Vedas), which today are some of the most important canonical texts of Hinduism, and are the codification of much of what developed into the core beliefs of Hinduism. Some modern Hindu scholars use the "Vedic religion" synonymously with "Hinduism." According to Sundararajan, Hinduism is also known as the Vedic religion. Other authors state that the Vedas contain "the fundamental truths about Hindu Dharma" which is called "the modern version of the ancient Vedic Dharma" The Arya Samajis recognize the Vedic religion
Ancient Iranian religion was invoked as the god who "best smite(s), who best destroy(s) the thief and the bandit at this trial." Astral deities figured more prominently in ancient Iranian religion than Vedic religion. This may be explained with the influence of Babylonian science on the Iranians, in particular the western groups. In the Avesta stars and constellations such as Ursa Major, the Pleiades, Vega, Fomalhaut and the Milky Way are mentioned. The most important astral deities seem to have been Tiri and Tishtrya. For reasons that are unknown, Tishtrya is associated with the star Sirius in one Yasht that is entirely devoted