﴿ فَإِذَا لَقِيتُمُ ٱلَّذِينَ كَفَرُوا۟ فَضَرْبَ ٱلرِّقَابِ حَتَّىٰٓ إِذَآ أَثْخَنتُمُوهُمْ فَشُدُّوا۟ ٱلْوَثَاقَ فَإِمَّا مَنًّۢا بَعْدُ وَإِمَّا فِدَآءً حَتَّىٰ تَضَعَ ٱلْحَرْبُ أَوْزَارَهَا ۚ ذَٰلِكَ وَلَوْ يَشَآءُ ٱللَّهُ لَٱنتَصَرَ مِنْهُمْ وَلَٰكِن لِّيَبْلُوَا۟ بَعْضَكُم بِبَعْضٍۢ ۗ وَٱلَّذِينَ قُتِلُوا۟ فِى سَبِيلِ ٱللَّهِ فَلَن يُضِلَّ أَعْمَٰلَهُمْ ﴾

“NOW WHEN you meet [in war] those who are bent on denying the truth, smite their necks until you overcome them fully, and then tighten their bonds; but thereafter [set them free,] either by an act of grace or against ransom, so that the burden of war may be lifted: thus [shall it be]. And [know that] had God so willed, He could indeed punish them [Himself]; but [He wills you to struggle] so as to test you [all] by means of one another. And as for those who are slain in God’s cause, never will He let their deeds go to waste:”

Allah then encouraged the believers to fight, saying: (Now when ye meet in battle) on the Day of Badr (those who disbelieve, then it is smiting of the necks) they smite their necks (until, when ye have routed them) and taken them prisoners, (then making fast of bonds) keep the prisoners in captivity; (and afterward either grace) either release the prisoners without asking for a ransom (or ransom) or the prisoner ransoms himself (till the war lay down its burdens) until the disbelievers lay down their arms; it is also said that this means: until the disbelievers give up. (That (is the ordinance)) to punish whoever disbelieves in Allah. (And if Allah willed He could have punished them (without you)) if Allah willed He could have punished the disbelievers of Mecca through the angels; it is also said that this means: if Allah willed He could have punished the disbelievers of Mecca without you having to fight them, (but (thus it is ordained) that He may try some of you by means of others) but it is thus that He may test the believers with the disbelievers and the relative with his relative. (And those who are slain in the way of Allah) and those who are killed in obedience of Allah on the Day of Badr, referring here to the prophetic Companions, (He rendereth not their actions vain) Allah will not thwart their good deeds which were performed during jihad.