The reign of Shah Abbas I (1588–1629) was initially benign; Jews prospered throughout Persia and were encouraged to settle in Isfahan, which was made a new capital. Toward the end of his rule, treatment of Jews became more harsh. Shi'a clergy (including a Jewish convert) persuaded the shah to require Jews to wear a distinctive badge on clothing and headgear. In 1656, the shah ordered the expulsion from Isfahan of all Jews because of the common belief of their "impurity". They were forced to convert to Islam. The treasury suffered from the loss of "jizya" collected from the Jews. People rumored that the converts continued to practice Judaism in secret. For whatever reason, the government in 1661 allowed Jews to take up their old religion, but still required them to wear a distinctive patch upon their clothing.