In the "Denkard"'s myth of Zoroaster's conception ("Dk.", 7.2.15-47), his "frawahr" is sent down from heaven within a unique hom-plant to be united on earth with his mortal body ("tanu") and appointed glory ("xwarrah"). In the "Bundahishn"'s creation myth narrates a fable in which the fravashis are given a choice of either remaining protected with Ahura Mazda, or being born into mortals, suffering but also helping bring about the defeat of Angra Mainyu. The "fravashi"s are shown the future before the creation of the "getik" material world. Ohrmazd's offer of security with inaction is rejected and the "fravashi" consent to enter the material world as active allies in the battle against evil ("GBd." 34.12f). In another cosmological myth ("Zadspram" 3.2-3), when Angra Mainyu breaks into the created world, the "fravashi"s draw together on the rim of the sky to imprison him. The "Denkard", "Shikand gumanic vichar", "Menog i khrat", "Zatspram", and several other works together include an extensive theological exegesis on the distinction between and (material and immaterial) aspects of creation, and between the and .