Zoroaster scholars, philosophers, and theologians to test his knowledge on religion and jurisprudence. Among the summoned scholars was a Zoroastrian High Priest. Al-Ridha questioned the priest on his beliefs saying,“Tell me about Zoroaster, whom you claim is a prophet; what is your evidence for his Prophethood?” to which the response was “We did not see him, but the tales of our ancestors informed us that he had legalized for us what no other person before had made legal.” Imam Al-Ridha responded “This is the case with all other nations. Tales had come to them about what the prophets had accomplished, what
Zoroaster be the Avesta. Alternatively, he appears with a mace, the "varza"—usually stylized as a steel rod crowned by a bull's head—that priests carry in their installation ceremony. In other depictions he appears with a raised hand and thoughtfully lifted finger, as if to make a point. Zoroaster is rarely depicted as looking directly at the viewer; instead, he appears to be looking slightly upwards, as if beseeching. Zoroaster is almost always depicted with a beard, this along with other factors bearing similarities to 19th-century portraits of Jesus. A common variant of the Zoroaster images derives from a Sassanid-era rock-face carving.