Al-Muminoon (23:77)
حَتَّىٰۤ إِذَا فَتَحۡنَا عَلَیۡهِم بَابࣰا ذَا عَذَابࣲ شَدِیدٍ إِذَا هُمۡ فِیهِ مُبۡلِسُونَ
Until, when We open for them the gate of extreme punishment, behold! they are aghast thereat.
— Mohammed Marmaduke William Pickthall
Hattaaa izaa fatahnaa 'alaihim baaban zaa 'azaabin shadeedin izaa hum feehi mublisoon