Tegh Bahadur (1621-1675) was the ninth of the Sikh gurus, or spiritual teachers. In November 1675, he went to Delhi to meet with the Indian emperor Aurangzeb, who had him beheaded because he would not convert to Islam. Sikhs everywhere observe his martyrdom with religious processions and pilgrimages at gurdwaras, or houses of worship, with a special devotion to him, and especially at the site of his martyrdom in Delhi at the Gurdwara Sisganj temple.