Quran 11:8

وَلَٮِٕنۡ أَخَّرۡنَا عَنۡہُمُ ٱلۡعَذَابَ إِلَىٰٓ أُمَّةٍ۬ مَّعۡدُودَةٍ۬ لَّيَقُولُنَّ مَا يَحۡبِسُهُ ۥۤ‌ۗ أَلَا يَوۡمَ يَأۡتِيهِمۡ لَيۡسَ مَصۡرُوفًا عَنۡہُمۡ وَحَاقَ بِہِم مَّا كَانُواْ بِهِۦ يَسۡتَہۡزِءُونَ ٨

And if we delay the retribution they have incurred – for we reserve it for a specific community – they say, "What is keeping Him?" In fact, once it comes to them, nothing can stop it, and their mocking will come back to haunt them.