Quran 43:75 from Surah Az-Zukhruf on Divine Marvels.
لَا يُفَتَّرُ عَنۡهُمۡ وَهُمۡ فِيهِ مُبۡلِسُونَ
English translation: Not will it subside for them and they in it (will) despair
Transliteration: la yufattaru anhum wahum fihi mub'lisuna