In the eschatology of Zoroastrian tradition, "Fire and Airyaman will melt the metals that are in the mountains and hills, and they will flow over the earth like rivers. And they will make all men to pass through that molten metal and thereby make them clean." Similarly, in the "Bundahishn" (completed 12th century), the proper noun "airyaman" is an epithet of the "saoshyant", an eschatological figure who brings about the final renovation of the world. Like the divinity Airyaman, the "saoshyant" is closely connected to Asha Vahishta.