For 10 points, identify this religion named for a Persian prophet, whose members worship Ahura Mazda.
Members of this religion untie and tie the kushti, and souls pass over the Chinvato Peretav. The creed of this religion is the Fravarane, and its founder supported the followers of asha. It served as the state religion of the Sassanids, and dead bodies were once placed in Towers of Silence. The scriptures of this religion include the Gathas, and are known as the Avesta. The supreme god of this religion is attended by the Amesha Spentas, and opposed by Ahriman. For 10 points, identify this religion named for a Persian prophet, whose members worship Ahura Mazda.
Members of this religion untie and tie the kushti, and souls pass over the Chinvato Peretav.
Zoroastrianism