The Bundahishn Zoroastrian text claims Zamzam was part of an ancient Zoroastrian mythology!?!

Following on from our last video, in which we speculated that the Zamzam name came from Zoroastrianism, based on an 8th century Chinese source that called Zoroastrianism, the "Zimzim" and similar usage by Al Tabari of Zamzamah to refer to Zoroastrian rites, we find a Zoroastrian text that places the Zamzam at the heart of its mythology.