(76) Those who believe fight in the cause of Allah, and those who disbelieve fight in the cause of Taghut. So fight against the allies of Satan. Indeed, the plot of Satan has ever been weak.
(39) And fight them until there is no fitnah and [until] the religion, all of it, is for Allah. And if they cease - then indeed, Allah is Seeing of what they do. (40) But if they turn away - then know that Allah is your protector. Excellent is the protector, and Excellent is the helper.
(45) O you who have believed, when you encounter a company [from the enemy forces], stand firm and remember Allah much that you may be successful.
(123) O you who have believed, fight those adjacent to you of the disbelievers and let them find in you harshness. And know that Allah is with the righteous.
(4) So when you meet those who disbelieve [in battle], strike [their] necks until, when you have inflicted slaughter upon them, then secure their bonds, and either [confer] favor afterwards or ransom [them] until the war lays down its burdens. That [is the command]. And if Allah had willed, He could have taken vengeance upon them [Himself], but [He ordered armed struggle] to test some of you by means of others. And those who are killed in the cause of Allah - never will He waste their deeds.
(7) O you who have believed, if you support Allah, He will support you and plant firmly your feet. (8) But those who disbelieve - for them is misery, and He will waste their deeds. (9) That is because they disliked what Allah revealed, so He rendered worthless their deeds.
(4) Indeed, Allah loves those who fight in His cause in a row as though they are a [single] structure joined firmly.
I will continue fighting people until they say that there is no god but Allah. If they say it, then their blood, their money, and their lives have been protected from me except by right, and their reckoning is with Allah.
Kisra (Khosrau the Persian king) will perish, and there will be no Kisra after him. Caesar (the Roman emperor) will surely perish, and there will be no Caesar after him. Their treasures will indeed be spent in the cause of Allah, and he [the Prophet (PBUH)] called war stratagem.