The first serious outbreak of anti-imperial reaction took place among the Jats of Mathura district, who had been challenged by the imperial faujdar, Abdun-Nabi. In 1669, the Jats challenged Mughals under the leadership of Gokula, resulting in the death of the faujdar. The freedom of the district could not be maintained for more than a year, and they were suppressed by Hasan Ali Khan, the new faujdar, who was aided by the Mughal emperor Aurangzeb. Gokula was put to death for rebelling against the emperor and consequently for not accepting Islam. But he courageously taunted Aurangezeb to give his daughter in marriage in lieu of accepting Islam.