"Despite being a member of the Naqshbandi order of the Sufis, Sirhindi insists that Sufi experience is inferior to the Sharī‘a, because Sharī‘a “is based on incontrovertible proof, while Sufi experience is a result of fallible speculation only….Any Sufi experience that is rejected by the Sharī‘a is heresy.” Sirhindi denounces all innovations, even so-called good innovations . He does not approve of certain customs introduced by some Sufi orders, such as music , dancing singing , and ecstatic sessions . Sirhindi also attacked the Shi‘a in a most violent and bitter manner in his Epistle on the Refutation of the Shi‘is, arguing that it was his duty to denounce heretical ideas wherever they appear."

“Kufr and Islam are opposed to each other. The progress of one is possible only at the expense of the other and co-existence between these two contradictory faiths is unthinkable.”

“Whenever a Jew is killed it is to the benefit of Islam.”

“Like many fundamentalists, Sirhindi has no tolerance for philosophers, since he believed that “the human intellect is incapable of understanding properly the nature of God without prophetic assistance.” But this rejection of the philosophers also “leads him to an equally indignant rejection of their natural sciences. Their geometry, astronomy, logic, and mathematics are useless as far as the hereafter is concerned and fall therefore within the category of ‘inconsequential things’ .”

“Although Sirhindi wrote a number of treatises on Sufi themes, he is best known for his letters to various Sufi shaykhs and Mughal dignitaries, which have been regarded as a turning point in the development of Indo-Muslim religious thought. Sirhindi’s insistence on strict adherence to the sharia was at least partially responsible for inspiring the Mughal emperor, Awrangzib, to carry out orthodox reforms that reversed the heretical developments of his prede- cessor, Akbar’s rule. ... Sirhindi also wrote a number of letters concern- ing the martial jihad and relations with non-Muslims under Muslim rule. In these letters, Sirhindi consistently advocates a harsh and uncompromis- ing stance toward the Hindus under Mughal rule.”

“As Ayesha Jalal points out, he was “a firm believer in the need to use state power to enforce Islam”.”

“It is therefore enjoined upon every Muslim to wage a regular crusade against all innovations.”