After Guru Arjun Deva had been tortured and done to death by Jahangir, he [Ahmad Sirhindi] wrote in letter No. 193 that “the execution of the accurse… - Guru Arjan

These days the accursed infidel of Gobindwal was very fortunately killed. It is a cause of great defeat for the reprobate Hindus. With whatever intention and purpose they are killed – the humiliation of infidels is for Muslims, life itself. Before this Kafir (Infidel) was killed, I had seen in a dream that the Emperor of the day had destroyed the crown of the head of Shirk or infidelity. It is true that this infidel [Guru Arjun] was the chief of the infidels and a leader of the Kafirs. The object of levying Jizya (tax on non-Muslims) on them is to humiliate and insult the Kafirs, and Jihad against them and hostility towards them are the necessities of the Mohammedan faith.

There was a Hindu named Arjan in Gobindwal on the banks of the Beas River. Pretending to be a spiritual guide, he had won over as devotees many simple-minded Indians and even some ignorant, stupid Muslims by broadcasting his claims to be a saint. They called him guru. Many fools from all around had recourse to him and believed in him implicitly. For three or four generations they had been peddling this same stuff. For a long time I had been thinking that either this false trade should be eliminated or that he should be brought into the embrace of Islam. At length, when Khusraw passed by there, this inconsequential little fellow wished to pay homage to Khusraw. When Khusraw stopped at his residence, [Arjan] came out and had an interview with [Khusraw]. Giving him some elementary spiritual precepts picked up here and there, he made a mark with saffron on his forehead, which is called qashqa in the idiom of the Hindus and which they consider lucky. When this was reported to me, I realized how perfectly false he was and ordered him brought to me. I awarded his houses and dwellings and those of his children to Murtaza Khan, and I ordered his possessions and goods confiscated and him executed.

'From Hindus and Muslims have I broken free', said Arjan Dev Ji, the fifth Sikh guru, in the 1590s. (...) Yet, it is not as straightforward as separatists might wish. No Sikh Guru was ever a Muslim, ergo the half-sentence: 'Of Muslims have I broken free', does not mean that he abandoned Islam. Therefore, the other half need not be construed as a repudiation of Hinduism either. Rather, it may be read as repudiating the whole 'identity' business including the division of mankind into Hindu and Muslim categories, on the Upanishadic ground that the Self is beyond these superficial trappings (the Self being neti neti, ?not this, not that?)-but that is a typically Hindu and decidedly un-Islamic position. To the Quran, group identity (being a member of the Muslim ummah or not) is everything, is laden with far-reaching consequences including an eternity in heaven or in hell. To Hindu society, it is also undeniably important; but to Hindu spirituality, it is not. Likewise, another verse of the same poem, 'I will not pray to idols nor say the Muslim prayer', is more anti-Islamic than anti-Hindu: it rejects a duty binding every single Muslim (prayer) and a practice common among Hindus (idol-worship) but by no means obligatory.