﴿ فَلَنُذِيقَنَّ ٱلَّذِينَ كَفَرُوا۟ عَذَابًۭا شَدِيدًۭا وَلَنَجْزِيَنَّهُمْ أَسْوَأَ ٱلَّذِى كَانُوا۟ يَعْمَلُونَ ﴾

“But We shall most certainly give those who are [thus] bent on denying the truth a taste of suffering severe, and We shall most certainly requite them according to the worst of their deeds!”

(But verily We shall cause those who disbelieve) Abu Jahl and his host (to taste an awful doom) in the life of the world, at Badr, (and verily We shall requite them the worst of what they used to do) the most evil of what they used to do in the life of the world.