Did Islam spread by the sword?

The short answer

The early Muslim state did expand through wars and conquest, and it would be wrong to deny that. But conquest and conversion are different things. The sources forbid forcing anyone into Islam, the conquered Jews and Christians were allowed to keep their religion, and the sources present invitation, teaching and personal example as the way to spread Islam. The hardest exception, the idol-worshippers of Arabia, is explained below.

Evidence 1 2 3 4 5 6 7 8

Explanation

The Quran's rule is plain: "There shall be no compulsion in [acceptance of] the religion" 1. Its method is invitation: "Invite to the way of your Lord with wisdom and good instruction, and argue with them in a way that is best" 2. When the Prophet ﷺ sent Mu'adh to Yemen, his instructions were to invite people, then teach those who accepted 3.

The hadith show what that looked like in practice. Thumama ibn Uthal, a chief captured by Muslim cavalry, was tied to a pillar of the mosque and asked about his position on three successive days, then released without conditions. Only after he was free did he go, wash and declare his faith, saying the Prophet's face had become the most beloved to him 4. Even a polytheist at war could ask for protection "so that he may hear the words of Allah", and then had to be escorted to safety 5.

At the same time, the early Muslims did fight wars, and later states conquered large territories. The Quran itself commands fighting certain People of the Book "until they give the jizyah" 6, a tax paid by non-Muslims under Muslim rule. That verse is important for this question: it ends the war with payment and protection, not with conversion. The idol-worshippers of Arabia were the exception: classical scholars read 9:5 as accepting only Islam from them, as the note explains. Umar ibn al-Khattab, as he lay dying, urged the next caliph to honour the covenant with these protected non-Muslims, to fight to defend them and not to tax them beyond their ability 7.

Historians generally find that the populations of conquered lands such as Iran, Syria and Egypt became mostly Muslim gradually, over two or more centuries, and that Islam reached much of South-East Asia and of West and East Africa largely through merchants, scholars and Sufi teachers rather than conquering armies, though local rulers and wars also played a part. The Quran's standard remains that Muslims may be just and kind to anyone who does not fight them 8.

The evidence

  1. 1
    Quran Al-Baqara · 2:256

    There shall be no compulsion in religion.

    لَآ إِكۡرَاهَ فِي ٱلدِّينِۖ قَد تَّبَيَّنَ ٱلرُّشۡدُ مِنَ ٱلۡغَيِّۚ فَمَن يَكۡفُرۡ بِٱلطَّٰغُوتِ وَيُؤۡمِنۢ بِٱللَّهِ فَقَدِ ٱسۡتَمۡسَكَ بِٱلۡعُرۡوَةِ ٱلۡوُثۡقَىٰ لَا ٱنفِصَامَ لَهَاۗ وَٱللَّهُ سَمِيعٌ عَلِيمٌ ۝٢٥٦

    There shall be no compulsion in [acceptance of] the religion. The right course has become clear from the wrong. So whoever disbelieves in Taghut and believes in Allah has grasped the most trustworthy handhold with no break in it. And Allah is Hearing and Knowing

  2. 2
    Quran An-Nahl · 16:125

    Invite with wisdom and good instruction, and argue in the best way.

    ٱدۡعُ إِلَىٰ سَبِيلِ رَبِّكَ بِٱلۡحِكۡمَةِ وَٱلۡمَوۡعِظَةِ ٱلۡحَسَنَةِۖ وَجَٰدِلۡهُم بِٱلَّتِي هِيَ أَحۡسَنُۚ إِنَّ رَبَّكَ هُوَ أَعۡلَمُ بِمَن ضَلَّ عَن سَبِيلِهِۦ وَهُوَ أَعۡلَمُ بِٱلۡمُهۡتَدِينَ ۝١٢٥

    Invite to the way of your Lord with wisdom and good instruction, and argue with them in a way that is best. Indeed, your Lord is most knowing of who has strayed from His way, and He is most knowing of who is [rightly] guided

  3. 3
    Hadith Sahih al-Bukhari 1395
    Sahih Bukhari

    Mu'adh was sent to Yemen to invite people and teach those who accepted.

    Narrated Ibn `Abbas:The Prophet (ﷺ) sent Mu`adh to Yemen and said, "Invite the people to testify that none has the right to be worshipped but Allah and I am Allah's Messenger (ﷺ), and if they obey you to do so, then teach them that Allah has enjoined on them five prayers in every day and night (in twenty-four hours), and if they obey you to do so, then teach them that Allah has made it obligatory for them to pay the Zakat from their property and it is to be taken from the wealthy among them and given to the poor

    العربية

    حَدَّثَنَا أَبُو عَاصِمٍ الضَّحَّاكُ بْنُ مَخْلَدٍ، عَنْ زَكَرِيَّاءَ بْنِ إِسْحَاقَ، عَنْ يَحْيَى بْنِ عَبْدِ اللَّهِ بْنِ صَيْفِيٍّ، عَنْ أَبِي مَعْبَدٍ، عَنِ ابْنِ عَبَّاسٍ ـ رضى الله عنهما ـ أَنَّ النَّبِيَّ صلى الله عليه وسلم بَعَثَ مُعَاذًا ـ رضى الله عنه ـ إِلَى الْيَمَنِ فَقَالَ ‏ "‏ ادْعُهُمْ إِلَى شَهَادَةِ أَنْ لاَ إِلَهَ إِلاَّ اللَّهُ، وَأَنِّي رَسُولُ اللَّهِ، فَإِنْ هُمْ أَطَاعُوا لِذَلِكَ فَأَعْلِمْهُمْ أَنَّ اللَّهَ قَدِ افْتَرَضَ عَلَيْهِمْ خَمْسَ صَلَوَاتٍ فِي كُلِّ يَوْمٍ وَلَيْلَةٍ، فَإِنْ هُمْ أَطَاعُوا لِذَلِكَ فَأَعْلِمْهُمْ أَنَّ اللَّهَ افْتَرَضَ عَلَيْهِمْ صَدَقَةً فِي أَمْوَالِهِمْ، تُؤْخَذُ مِنْ أَغْنِيَائِهِمْ وَتُرَدُّ عَلَى فُقَرَائِهِمْ ‏"‏‏.‏

  4. 4
    Hadith Sahih al-Bukhari 4372
    Sahih Bukhari

    Thumama was released unconditionally and then embraced Islam by his own choice.

    Narrated Abu Huraira:The Prophet (ﷺ) sent some cavalry towards Najd and they brought a man from the tribe of Banu Hanifa who was called Thumama bin Uthal. They fastened him to one of the pillars of the Mosque. The Prophet went to him and said, "What have you got, O Thumama?" He replied," I have got a good thought, O Muhammad! If you should kill me, you would kill a person who has already killed somebody, and if you should set me free, you would do a favor to one who is grateful, and if you want property, then ask me whatever wealth you want." He was left till the next day when the Prophet (ﷺ) said to him, "What have you got, Thumama? He said, "What I told you, i.e. if you set me free, you would do a favor to one who is grateful." The Prophet (ﷺ) left him till the day after, when he said, "What have you got, O Thumama?" He said, "I have got what I told you. "On that the Prophet (ﷺ) said, "Release Thumama." So he (i.e. Thumama) went to a garden of date-palm trees near to the Mosque, took a bath and then entered the Mosque and said, "I testify that None has the right to be worshipped except Allah, and also testify that Muhammad is His Apostle! By Allah, O Muhammad! There was no face on the surface of the earth most disliked by me than yours, but now your face has become the most beloved face to me. By Allah, there was no religion most disliked by me than yours, but now it is the most beloved religion to me. By Allah, there was no town most disliked by me than your town, but now it is the most beloved town to me. Your cavalry arrested me (at the time) when I was intending to perform the `Umra. And now what do you think?" The Prophet (ﷺ) gave him good tidings (congratulated him) and ordered him to perform the `Umra. So when he came to Mecca, someone said to him, "You have become a Sabian?" Thumama replied, "No! By Allah, I have embraced Islam with Muhammad, Apostle of Allah. No, by Allah! Not a single grain of wheat will come to you from Yamamah unless the Prophet gives his permission

    العربية

    حَدَّثَنَا عَبْدُ اللَّهِ بْنُ يُوسُفَ، حَدَّثَنَا اللَّيْثُ، قَالَ حَدَّثَنِي سَعِيدُ بْنُ أَبِي سَعِيدٍ، أَنَّهُ سَمِعَ أَبَا هُرَيْرَةَ ـ رضى الله عنه ـ قَالَ بَعَثَ النَّبِيُّ صلى الله عليه وسلم خَيْلاً قِبَلَ نَجْدٍ، فَجَاءَتْ بِرَجُلٍ مِنْ بَنِي حَنِيفَةَ يُقَالُ لَهُ ثُمَامَةُ بْنُ أُثَالٍ، فَرَبَطُوهُ بِسَارِيَةٍ مِنْ سَوَارِي الْمَسْجِدِ، فَخَرَجَ إِلَيْهِ النَّبِيُّ صلى الله عليه وسلم فَقَالَ ‏"‏ مَا عِنْدَكَ يَا ثُمَامَةُ ‏"‏‏.‏ فَقَالَ عِنْدِي خَيْرٌ يَا مُحَمَّدُ، إِنْ تَقْتُلْنِي تَقْتُلْ ذَا دَمٍ، وَإِنْ تُنْعِمْ تُنْعِمْ عَلَى شَاكِرٍ، وَإِنْ كُنْتَ تُرِيدُ الْمَالَ فَسَلْ مِنْهُ مَا شِئْتَ‏.‏ حَتَّى كَانَ الْغَدُ ثُمَّ قَالَ لَهُ ‏"‏ مَا عِنْدَكَ يَا ثُمَامَةُ ‏"‏‏.‏ قَالَ مَا قُلْتُ لَكَ إِنْ تُنْعِمْ تُنْعِمْ عَلَى شَاكِرٍ‏.‏ فَتَرَكَهُ حَتَّى كَانَ بَعْدَ الْغَدِ، فَقَالَ ‏"‏ مَا عِنْدَكَ يَا ثُمَامَةُ ‏"‏‏.‏ فَقَالَ عِنْدِي مَا قُلْتُ لَكَ‏.‏ فَقَالَ ‏"‏ أَطْلِقُوا ثُمَامَةَ ‏"‏، فَانْطَلَقَ إِلَى نَخْلٍ قَرِيبٍ مِنَ الْمَسْجِدِ فَاغْتَسَلَ ثُمَّ دَخَلَ الْمَسْجِدَ فَقَالَ أَشْهَدُ أَنْ لاَ إِلَهَ إِلاَّ اللَّهُ، وَأَشْهَدُ أَنَّ مُحَمَّدًا رَسُولُ اللَّهِ، يَا مُحَمَّدُ وَاللَّهِ مَا كَانَ عَلَى الأَرْضِ وَجْهٌ أَبْغَضَ إِلَىَّ مِنْ وَجْهِكَ، فَقَدْ أَصْبَحَ وَجْهُكَ أَحَبَّ الْوُجُوهِ إِلَىَّ، وَاللَّهِ مَا كَانَ مِنْ دِينٍ أَبْغَضَ إِلَىَّ مِنْ دِينِكَ، فَأَصْبَحَ دِينُكَ أَحَبَّ الدِّينِ إِلَىَّ، وَاللَّهِ مَا كَانَ مِنْ بَلَدٍ أَبْغَضُ إِلَىَّ مِنْ بَلَدِكَ، فَأَصْبَحَ بَلَدُكَ أَحَبَّ الْبِلاَدِ إِلَىَّ، وَإِنَّ خَيْلَكَ أَخَذَتْنِي وَأَنَا أُرِيدُ الْعُمْرَةَ، فَمَاذَا تَرَى فَبَشَّرَهُ رَسُولُ اللَّهِ صلى الله عليه وسلم وَأَمَرَهُ أَنْ يَعْتَمِرَ، فَلَمَّا قَدِمَ مَكَّةَ قَالَ لَهُ قَائِلٌ صَبَوْتَ‏.‏ قَالَ لاَ، وَلَكِنْ أَسْلَمْتُ مَعَ مُحَمَّدٍ رَسُولِ اللَّهِ صلى الله عليه وسلم، وَلاَ وَاللَّهِ لاَ يَأْتِيكُمْ مِنَ الْيَمَامَةِ حَبَّةُ حِنْطَةٍ حَتَّى يَأْذَنَ فِيهَا النَّبِيُّ صلى الله عليه وسلم‏.‏

  5. 5
    Quran At-Tawba · 9:6

    A polytheist who seeks protection is to hear the Quran and be escorted to safety.

    وَإِنۡ أَحَدࣱ مِّنَ ٱلۡمُشۡرِكِينَ ٱسۡتَجَارَكَ فَأَجِرۡهُ حَتَّىٰ يَسۡمَعَ كَلَٰمَ ٱللَّهِ ثُمَّ أَبۡلِغۡهُ مَأۡمَنَهُۥۚ ذَٰلِكَ بِأَنَّهُمۡ قَوۡمࣱ لَّا يَعۡلَمُونَ ۝٦

    And if any one of the polytheists seeks your protection, then grant him protection so that he may hear the words of Allah. Then deliver him to his place of safety. That is because they are a people who do not know

  6. 6
    Quran At-Tawba · 9:29

    Fighting certain People of the Book ends when they pay the jizyah, not when they convert.

    قَٰتِلُواْ ٱلَّذِينَ لَا يُؤۡمِنُونَ بِٱللَّهِ وَلَا بِٱلۡيَوۡمِ ٱلۡأٓخِرِ وَلَا يُحَرِّمُونَ مَا حَرَّمَ ٱللَّهُ وَرَسُولُهُۥ وَلَا يَدِينُونَ دِينَ ٱلۡحَقِّ مِنَ ٱلَّذِينَ أُوتُواْ ٱلۡكِتَٰبَ حَتَّىٰ يُعۡطُواْ ٱلۡجِزۡيَةَ عَن يَدࣲ وَهُمۡ صَٰغِرُونَ ۝٢٩

    Fight those who do not believe in Allah or in the Last Day and who do not consider unlawful what Allah and His Messenger have made unlawful and who do not adopt the religion of truth from those who were given the Scripture - [fight] until they give the jizyah willingly while they are humbled

  7. 7
    Hadith Sahih al-Bukhari 3052
    Sahih Bukhari

    Umar urged the next caliph to keep the covenant with protected non-Muslims, defend them and not overtax them.

    Narrated `Amr bin Maimun:`Umar (after he was stabbed), instructed (his would-be-successor) saying, "I urge him (i.e. the new Caliph) to take care of those non-Muslims who are under the protection of Allah and His Apostle in that he should observe the convention agreed upon with them, and fight on their behalf (to secure their safety) and he should not over-tax them beyond their capability

    العربية

    حَدَّثَنَا مُوسَى بْنُ إِسْمَاعِيلَ، حَدَّثَنَا أَبُو عَوَانَةَ، عَنْ حُصَيْنٍ، عَنْ عَمْرِو بْنِ مَيْمُونٍ، عَنْ عُمَرَ ـ رضى الله عنه ـ قَالَ وَأُوصِيهِ بِذِمَّةِ اللَّهِ وَذِمَّةِ رَسُولِهِ صلى الله عليه وسلم أَنْ يُوفَى لَهُمْ بِعَهْدِهِمْ، وَأَنْ يُقَاتَلَ مِنْ وَرَائِهِمْ، وَلاَ يُكَلَّفُوا إِلاَّ طَاقَتَهُمْ‏.‏

  8. 8
    Quran Al-Mumtahana · 60:8

    Allah does not forbid kindness and justice to those who do not fight Muslims.

    لَّا يَنۡهَىٰكُمُ ٱللَّهُ عَنِ ٱلَّذِينَ لَمۡ يُقَٰتِلُوكُمۡ فِي ٱلدِّينِ وَلَمۡ يُخۡرِجُوكُم مِّن دِيَٰرِكُمۡ أَن تَبَرُّوهُمۡ وَتُقۡسِطُوٓاْ إِلَيۡهِمۡۚ إِنَّ ٱللَّهَ يُحِبُّ ٱلۡمُقۡسِطِينَ ۝٨

    Allah does not forbid you from those who do not fight you because of religion and do not expel you from your homes - from being righteous toward them and acting justly toward them. Indeed, Allah loves those who act justly

This answer was compiled with the help of AI, using only the verified texts shown here. Every reference links to its source. If you find a mistake, please report it. Updated 2026-09-24

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