Quran 6:30 from Surah Al-An'aam on Divine Marvels.
وَلَوۡ تَرَىٰٓ إِذۡ وُقِفُواْ عَلَىٰ رَبِّهِمۡۚ قَالَ أَلَيۡسَ هَٰذَا بِٱلۡحَقِّۚ قَالُواْ بَلَىٰ وَرَبِّنَاۚ قَالَ فَذُوقُواْ ٱلۡعَذَابَ بِمَا كُنتُمۡ تَكۡفُرُونَ
English translation: And if you (could) see when they will be made to stand before their Lord He (will) say Is not this the truth They will say Yes by our Lord He (will) say So taste the punishment because you used to disbelieve
Transliteration: walaw tara idh wuqifu ala rabbihim qala alaysa hadha bil-haqi qalu bala warabbina qala fadhuqu al-'adhaba bima kuntum takfuruna