his elder son. He nominated his younger son Guru Har Krishan to succeed him in 1661. Aurangzeb responded by granting Ram Rai a jagir (land grant). Ram Rai founded a town there and enjoyed Aurangzeb's patronage; the town came to be known as Dehradun, after Dehra referring to Ram Rai's shrine. Sikhs who followed Ram Rai came to be known as Ramraiya Sikhs. However, according to rough estimates, there are around 120–150 million (12–15 crore) Guru Har Krishan became the eighth Guru at the age of five, and died of smallpox before reaching the age of eight. No hymns composed by these three Gurus are included in the Guru Granth Sahib. Guru Tegh Bahadur, the uncle of Guru Har Krishan, became Guru in 1665. Tegh Bahadur resisted the forced conversions of Kashmiri Pandits and non-Muslims to Islam, and was publicly beheaded in 1675 on the orders of Mughal emperor Aurangzeb in Delhi for refusing to convert to Islam. His beheading traumatized the Sikhs. His body was cremated in Delhi, the head was carried secretively by Sikhs and cremated in Anandpur. He was succeeded by his son, Gobind Rai, who militarised his followers by creating the Khalsa in 1699, and baptising the Pañj Piārē. From then on, he was known as Guru Gobind Singh, and Sikh identity was redefined into a political force resisting religious persecution. Sikh confederacy and the rise of the Khalsa Guru Gobind Singh inaugurated the Khalsa (the collective body of all initiated Sikhs) as the Sikh temporal authority in the year 1699. It created a community that combines its spiritual purpose and goals with political and military duties. Shortly before his death, Guru Gobind Singh proclaimed the Gurū Granth Sāhib (the Sikh Holy Scripture) to be the ultimate spiritual authority for the Sikhs. The Sikh Khalsa's rise to power began in the 17th century during a time of growing militancy against Mughal rule. The creation of a Sikh Empire began when Guru Gobind Singh sent a Sikh general, Banda Singh Bahadur, to fight the Mughal rulers of India and those who had committed atrocities against Pir Buddhu Shah. Banda Singh advanced his army towards the main Muslim Mughal city of Sirhind and, following the instructions of the Guru, punished all the culprits. Soon after the invasion of Sirhind, while resting in his chamber after the Rehras prayer Guru Gobind Singh was stabbed by a Pathan assassin hired