Hindu texts Vedas: the Rigveda, the Yajurveda, the Samaveda and the Atharvaveda. Each Veda has been subclassified into four major text types – the Samhitas (mantras and benedictions), the Aranyakas (text on rituals, ceremonies, sacrifices and symbolic-sacrifices), the Brahmanas (commentaries on rituals, ceremonies and sacrifices), and the Upanishads (text discussing meditation, philosophy and spiritual knowledge). The Upanishads are a collection of Hindu texts which contain some of the central philosophical concepts of Hinduism. The Upanishads are commonly referred to as "Vedānta", variously interpreted to mean either the "last chapters, parts of the Veda" or "the object, the highest purpose of the Veda".
Ancient Iranian religion sources on Iranian myths, both from indigenous texts and classical authors, originated after the emergence of Zoroastrianism, it is difficult to distinguish between myths that are Zoroastrian innovations from that those that are inherited. The fact that Zoroastrianism is heavily inspired by already existing ideas and has adapted from previous Iranian religions makes this discerning particularly hard. Like other ancient religions in general, Iranian religions did not have main collection of myth. Iranian myths are rather fragments from a diverse variety of myths that exhibit variations in common themes. There is a variant of the Noah's Ark myth in Iranian