Historical Vedic religion the Vedic period, composed in Vedic Sanskrit, are mainly the four Vedic Samhitas, but the Brahmanas, Aranyakas and some of the older Upanishads (Bṛhadāraṇyaka, Chāndogya, Jaiminiya Upanishad Brahmana) are also placed in this period. The Vedas record the liturgy connected with the rituals and sacrifices. These texts are also considered as a part of the scripture of contemporary Hinduism. Specific rituals and sacrifices of the Vedic religion include, among others: The Hindu rites of cremation are seen since the Rigvedic period; while they are attested from early times in the Cemetery H culture, there is a late Rigvedic reference invoking
Ancient Iranian religion composed) initially in the 5th-century BC. Another Iranian source are royal inscriptions of the Achaemenid Empire made in the Old Persian (with Akkadian, Aramaic and Elamite translations). These inscriptions, in particular those of Darius I and his son Xerxes I, contain many references to religion. The fact that these are fixed in time and place make them particularly useful. Except from the Achaemenid inscriptions, there is no evidence that the Iranian religious compositions were written until the late Parthian or Sassanid period. This makes ancient Iranian religion the only major religion of the Middle East which has no written texts