Yusuf Ali
Those who reject Faith will not cease to be in doubt concerning (Revelation) until the Hour (of Judgment) comes suddenly upon them, or there comes to them the Penalty of a Day of Disaster.

Sahih International
But those who disbelieve will not cease to be in doubt of it until the Hour comes upon them unexpectedly or there comes to them the punishment of a barren Day.

Shakir
And those who disbelieve shall not cease to be in doubt concerning it until the hour overtakes them suddenly, or there comes on them the chastisement of a destructive day.

Pickthall
And those who disbelieve will not cease to be in doubt thereof until the Hour come upon them unawares, or there come unto them the doom of a disastrous day.

محمد جالندھری
اور کافر لوگ ہمیشہ اس سے شک میں رہیں گے یہاں تک کہ قیامت ان پر ناگہاں آجائے یا ایک نامبارک دن کا عذاب ان پر واقع ہو