"Shykh Nuruddin Mubarak Ghaznavi was the most important disciple of Shykh Shihabuddin Suhrawardi, founder of the second most important sufi silsila after the Chishtiyya, who died in Baghdad in 1235 AD. Ghaznavi had come and settled down in India where he passed away in 1234-35 AD. He served as Shykh-ul-Islam in the reign of Shamsuddin Iltutmish (AD 1210-1236), and propounded the doctrine of Din Panahi. Barani quotes the first principle of this doctrine as follows in his Tarikh-i-Firuzshahi. “The kings should protect the religion of Islam with sincere faith… And kings will not be able to perform the duty of protecting the Faith unless, for the sake of God and the Prophet’s creed, they overthrow and uproot kufr and kafiri (infidelity), shirk (setting partners to God) and the worship of idols. But if the total uprooting of idolatry is not possible owing to the firm roots of kufr and the large number of kafirs and mushriks (infidels and idolaters), the kings should at least strive to insult, disgrace, dishonour and defame the mushrik and idol-worshipping Hindus, who are the worst enemies of God and the Prophet. The symptom of the kings being the protectors of religion is this:- When they see a Hindu, their eyes grow red and they wish to bury him alive; they also desire to completely uproot the Brahmans, who are the leaders of kufr and shirk and owning to whom kufr and shirk are spread and the commandments of kufr are enforced… Owing to the fear and terror of the kings of Islam, not a single enemy of God and the Prophet can drink water that is sweet or stretch his legs on his bed and go to sleep in peace.”"