the rituals of fire are contemporary with that of Zoroastrianism itself. It appears at approximately the same time as the shrine cult and is roughly contemporaneous with the introduction of Atar as a divinity. There is no allusion to a temple of fire in the Avesta proper, nor is there any Old Persian word for one.

That the rituals of fire was a doctrinal modification and absent from early Zoroastrianism is also evident in the later Atash