فَهَلْ يَنظُرُونَ إِلَّا ٱلسَّاعَةَ أَن تَأْتِيَهُم بَغْتَةً ۖ فَقَدْ جَآءَ أَشْرَاطُهَا ۚ فَأَنَّىٰ لَهُمْ إِذَا جَآءَتْهُمْ ذِكْرَىٰهُمْ

Do they then wait for aught but the hour that it should come to them all of a sudden? Now indeed the tokens of it have (already) come, but how shall they have their reminder when it comes on them?