٣. وَلَوْلَآ أَن كَتَبَ ٱللَّهُ عَلَيْهِمُ ٱلْجَلَآءَ لَعَذَّبَهُمْ فِى ٱلدُّنْيَا ۖ وَلَهُمْ فِى ٱلْـَٔاخِرَةِ عَذَابُ ٱلنَّارِ
٤. ذَٰلِكَ بِأَنَّهُمْ شَآقُّوا۟ ٱللَّهَ وَرَسُولَهُۥ ۖ وَمَن يُشَآقِّ ٱللَّهَ فَإِنَّ ٱللَّهَ شَدِيدُ ٱلْعِقَابِ
[3-4] Had Allah not decreed banishment for them, He would have chastised them in this world,8 and in the Hereafter there certainly awaits :hem the torment of the Fire. All this happened because they resisted Allah and His Messenger, and whoever resists Allah (should know that) Allah is stern in inflicting punishment.
8"Would have chastised them in the world": world have caused them to be annihilated. That is, had they fought instead of surrendering to save their lives, they would have been completely wiped out. Their men would have perished in the war and their womenfolk and children would have been taken prisoners and there would be no one to have them ransomed.