Surah Hud (Hud), Verse 8

وَلَىِٕنْ اَخَّرْنَا عَنْهُمُ الْعَذَابَ اِلٰۤی اُمَّةٍ مَّعْدُوْدَةٍ لَّیَقُوْلُنَّ مَا یَحْبِسُهٗ اَلَا یَوْمَ یَاْتِیْهِمْ لَیْسَ مَصْرُوْفًا عَنْهُمْ وَحَاقَ بِهِمْ مَّا كَانُوْا بِهٖ یَسْتَهْزِءُوْنَ 

Wala'in akharnaa 'anhumul 'azaaba ilaaa ummatim ma'doodatil la yaqoolunna maa yahbisuh; alaa yawma ya'teehim laisa masroofan 'anhum wa haaqa bihim maa kaanoo bihee yastahzi'oon

“If We delay the penalty for them for a definite term, they are sure to say, "What keeps it back?" Ah! On the day it (actually) reaches them, nothing will turn it away from them, and they will be completely encircled by that which they used to mock at!”

Quran 11:8 (Yusuf Ali Translation)