When they gathered the war booty and the captives...
When they gathered the war booty and the captives, the Helpers spoke regarding the captives, so Allah-azwj Blessed and Exalted Revealed: So when the war booty and the prisoners were collected, the Helpers spoke regarding the prisoners, so Allah-azwj Blessed and Exalted Revealed: It was not for the Prophet that there should happen to be prisoners for him until he has triumphed in the land [8:67].
When Allah-azwj Legalised the captives and the war booty for them, Sa’ad Bin Muaz spoke, and he was from the ones who had stayed by the tent of the Prophet-saww. He said, ‘O Rasool-Allah-saww! We were not prevented from pursuing the enemy by us being abstemious regarding the Jihad, nor cowardice from the enemy, but we feared that your-saww place would be exposed and the cavalry of the Polytheists would come towards you-saww.
And faces of the Emigrants and the Helpers had stood by the tent and not one of them had doubted regarding what had withheld him, and the people are a lot, O Rasool-Allah-saww, and the war booty is little, and when you-saww give them, nothing would remain for your-saww companions’, and he feared that Rasool-Allah-saww might distribute the war booty and the weapons of the killed ones between the ones who fought, and not give anything to the one who stayed behind by the tent of Rasool-Allah-saww.
They differed in what is between them until they asked Rasool-Allah-saww and said, ‘For whom is this war booty?’ So, Allah-azwj Revealed: They are asking you about the Anfaal. Say: ‘The Anfaal is for Allah and the Rasool [8:1]. So, the people returned and there wasn’t anything for them in the war booty.
Then Allah-azwj Revealed after that: And know that whatever booty you gain from anything, so a fifth of it is for Allah, and for the Rasool, and for the near of kin, and the orphans, and the needy and the wayfarer, [8:41], and Rasool-Allah-saww distributed it between them. Sa’ad Bin Abu Waqas said, ‘O Rasool-Allah-saww! Will you-saww give to the riders of the people who protected them, similar to what you-saww give to the weak?’ The Prophet-saww said: ‘May your mother be bereft of you!
And were you helped except by your weak ones?’ He-asws said: ‘So, Rasool-Allah-saww did not keep a fifth at Badr and distributed it between his-saww companions, then he-saww came and took the fifth after Badr, and His-azwj Words were Revealed: They are asking you about the Anfaal. [8:1], after the expire of the battle of Badr.