The real purpose in levying jizya on them (the non-Muslims) is to humiliate then to such an extent that, on account of fear of jizva, they may not be… - Ahmad Sirhindi

Therefore, it is necessary that infidelity should be cursed in order to serve the faith (Islam). Cursing unbelief in the heart is the lesser way. The greater way is to curse it in the heart as well as with the body. In short, cursing means to nourish enmity towards enemies of the true faith, whether that enmity is harboured in the heart when there is fear of injury from them (infidels), or it is harboured in the heart as well as served with the body when there is no fear of injury from them.
In the opinion of this recluse, there is no greater way to obtain the blessings of Allah than to curse the enemies of the faith (be impatient with them). For Allah himself harbours enmity towards the infidels and infidelity…
Once I went to visit a sick man who was close to death. When I meditated on him, I saw that his heart was layered with darknesses. I intended to remove those darknesses. But he was not yet ready for it… When I meditated more deeply, I discovered that those darknesses had gathered due to his friendship with the infidels. They could not be dispersed easily. He had to suffer torments of hell before he could get purged of them…

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.

The original aim of taking the jizya from [unbelievers] is for their degradation and this degradation [ought to be] to the extent that they cannot wear nice clothing for fear of the jizya ... and that they are always fearful and trembling ....