"So when Allaah سبحانه و تعالى sent His Prophet صلى الله عليه وسلم, most of the people of other religions responded to him and to his Khulafaa رضي الله عنهم after him out of their own freewill and of their own choosing- and he never once forced anyone to enter the religion ever.
Rather he would only fight those who declared war against him and fought him, he never fought or forced to enter the religion those who kept peace with him and had a truce with him, in conformance with the order of his Lord سبحانه where He said:
"There is no compulsion in religion. Verily, the Right Path has become distinct from the wrong path." [Soorah al-Baqarah, 2:256]
And this is a negation in the form of a prohibitive order, i.e., 'Do not force anyone to enter the religion.'
This aayah was revealed concerning some of the Companions رضي الله عنهم who had children who had become Jews or Christians before Islaam, so when Islaam came and the fathers became Muslims they wanted to compel their children to enter it, so Allaah سبحانه forbade them from doing that, such that they themselves should be the ones who choose to enter Islaam.
And it will become clear to whoever ponders the biography of the Prophet صلى الله عليه وسلم that he never forced anyone to enter the religion ever, and that he only fought those who fought him. And as for those who made a treaty with him, he did not fight them as long as they stuck to their treaty and did not break their covenant. In fact, Allaah, the Most High, ordered him to be faithful to the treaty between them as long as they upheld it, as He said:
"So as long as they are upright toward you, be upright toward them. Indeed, Allah loves al-Muttaqeen [1]." [Soorah at-Tawbah, 9:7]
And when he came to Medinah he made peace with the Jews and acknowledged their religion, so when they waged war against him and broke their covenant with him and initiated fighting [against him], he fought them and so was gracious to some of them, expelled some and killed some.
Likewise when he had a truce with the Quraish for ten years he never initiated any fighting against them until they themselves were the ones who started fighting him and broke their covenant, so it was then that he raided them ... and they were the ones who would invade him before that just as they had set out for him on the Day of Uhud and the Day of the Trench and the Day of Badr too. They came to fight him-and if they had turned away he would not have fought them.
The point is that he صلى الله عليه وسلم never ever forced anyone to enter his religion.
Rather people entered his religion out of their own choosing and freewill, so most of the people in the world embraced his call when the guidance became clear to them and when it became clear to them that he truly was the Messenger of Allaah (may Allaah exalt his mention and grant him peace)." [2]
Mufti Muhammad Shafi رحمه الله said,
"Some people raise objections. They say this verse (2:256) tells us that there is no compulsion in faith, although the teaching of jihad and qital (fighting) in Islam appears contrary to this principle. Looking at this a little carefully, we can find out that the objection is not valid, since the teaching of jihad and qital in Islam is not to coerce people into accepting Faith. Had it been so, why would there be Islamic injunctions of jizyah to provide an umbrella of security for kuffar (disbelievers) which protects their life, property and honour? In fact, this is to remove disorder, strife or fasad, for Allah Almighty dislikes fasad, which is what the kuffar are after. Therefore, Allah Almighty says:
"And they strive throughout the land [causing] corruption, and Allah does not like corrupters." [Soorah al-Maa'idah, 5:64]
It is for this reason that Allah Almighty has ordained that the fasad created by these people should be removed by jihad and qital. So, killing such people is like the killing of serpents, scorpions and their harmful likes.
Islam has firmly banned the killing of women, children, the aged and the crippled etc., even in the heat of jihad on the battlefield, since they are incapable of creating disorder. Similarly, it has stopped the killing of those who become law-abiding citizens by promising to pay jizyah (compensatory dues paid by free non-Muslims under Muslim rule against guarantee of the security of their life, property and honour).
This approach of Islam makes it clear that it does not force people to accept and enter Faith, rather far from it, by using it as a method of stopping oppression in the world, it hopes to establish justice and equity and peace and security. When Sayyidna 'Umar رضي الله عنه invited an old Christian woman to accept Islam, she said in reply: "I am an old woman nearing death." Hearing this, Sayyidna 'Umar رضي الله عنه did not force her to come into the fold of Islam. In fact, he recited this very verse: that is, 'there is no compulsion in Faith.'
Really and truly, coercion and compulsion to make one accept a faith are not possible at all because faith is not related to outward physical response; it relates to the heart. Coercion and compulsion affect nothing but the outsides of physique and this is all that is affected by jihad and qital (fighting in the way of Allah). Consequently, it is just not possible that people can be forced to accept faith through these measures. This proves that the verses of jihad and qital are not contradictory to the verse: (There is no compulsion in Faith)." (Mazhari, Qurtubi) [3]
Notes:
[1] "Taqwa" emanates from the root wiqaayah, which means, "he protected," or "to protect." When the word taqwa is used with respect to Allaah سبحانه و تعالى it means that one must fear or protect himself from Allaah's anger and punishment. See: Fear Allaah Wherever you are - http://www.muftisays.com/forums/53-duaas--supplications/7703-fear-allah-wherever-you-are-taqwa.html
[2] Abridged from Hidaayatul-Hayaaraa fi Ajwibatil-Yahudi wan-Nasaaraa, pp. 29-30
[3] Ma'ariful Qur'an
