Surat Al-Ankaboot (The Spider) - العنكبوت

وَيَسْتَعْجِلُونَكَ بِٱلْعَذَابِ وَلَوْلَآ أَجَلٌ مُّسَمًّى لَّجَآءَهُمُ ٱلْعَذَابُ وَلَيَأْتِيَنَّهُم بَغْتَةً وَهُمْ لَا يَشْعُرُونَ ﴿٥٣﴾

And they ask you to hasten on the chastisement; and had not a term been appointed, the chastisement would certainly have come to them; and most certainly it will come to them all of a sudden while they will not perceive.