What religion was not practiced in the Mauryan empire?

In the Mauryan Empire, which thrived from the 4th to the 2nd century BCE, Buddhism and Jainism were significant religions alongside Hinduism. However, Zoroastrianism, the ancient pre-Islamic religion of Persia, was not practiced within the Mauryan Empire. The empire primarily encompassed the Indian subcontinent, where Zoroastrian beliefs did not have a substantial following.