This tradition has come down to us from prehistoric times. The foundations of Hinduism can be found in the teachings of anonymous ancient sages or rishis, which were originally transmitted orally. We know very little about Hinduim beyond what can be learned from the Vedas, a collection of hymns and other ritual texts composed in different periods. These texts contain a lot of material including the teachings of the early sages. The oldest evidence of religious practices in India date back approximately to 5500 BCE. It is a mistake to reduce all early Hinduism to Vedic religion: there were many other non-Vedic religious traditions in early Hinduism which have left no early texts and that can be known to some extent by archaeological evidence.