Surah Ah-Shu'ara' (The Poets), Verse 202

فَیَاْتِیَهُمْ بَغْتَةً وَّهُمْ لَا یَشْعُرُوْنَ ۟

Fayaatiyahum baghtatanw wa hum laa yash'uroon

“But the (Penalty) will come to them of a sudden, while they perceive it not;”

Quran 26:202 (Yusuf Ali Translation)