21. Enbija · verses 38–39

وَيَقُولُونَ مَتَىٰ هَٰذَا ٱلۡوَعۡدُ إِن كُنتُمۡ صَٰدِقِينَ

Wayaqooloona mata hatha alwaAAdu in kuntum sadiqeena

They say: "When will this promise come to pass, if ye are telling the truth?"

لَوۡ يَعۡلَمُ ٱلَّذِينَ كَفَرُواْ حِينَ لَا يَكُفُّونَ عَن وُجُوهِهِمُ ٱلنَّارَ وَلَا عَن ظُهُورِهِمۡ وَلَا هُمۡ يُنصَرُونَ

Law yaAAlamu allatheena kafaroo heena la yakuffoona AAan wujoohihimu alnnara wala AAan thuhoorihim wala hum yunsaroona

If only the Unbelievers knew (the time) when they will not be able to ward off the fire from their faces, nor yet from their backs, and (when) no help can reach them!