26:201 laa yu'minuuna bihii Hat-taa yarawul 'Adhaabal aliym

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Ahmed Raza Khan: Mohammed Aqib Qadri:
They will not believe in it to the extent that they see the painful punishment.

Yusuf Ali:
They will not believe in it until they see the grievous Penalty;

Pickthal:
They will not believe in it till they behold the painful doom,