﴿ وَلَوْلَآ أَن كَتَبَ ٱللَّهُ عَلَيْهِمُ ٱلْجَلَآءَ لَعَذَّبَهُمْ فِى ٱلدُّنْيَا ۖ وَلَهُمْ فِى ٱلْءَاخِرَةِ عَذَابُ ٱلنَّارِ ﴾

“And had it not been for God’s having ordained banishment for them, He would indeed have imposed [yet greater] suffering on them in this world: still, in the life to come there awaits them suffering through fire:”

(And if Allah had not decreed migration) from Medina to Historic Syria (for them) for the Banu'l-Nadir, (He verily would have punished them in this world) by exposing them to killing, (and theirs in the Hereafter is the punishment of the Fire) which is worse than being killed.