Quran 29:53 from Surah Al-Ankaboot on Divine Marvels.
وَيَسۡتَعۡجِلُونَكَ بِٱلۡعَذَابِ وَلَوۡلَآ أَجَلٞ مُّسَمّٗى لَّجَآءَهُمُ ٱلۡعَذَابُۚ وَلَيَأۡتِيَنَّهُم بَغۡتَةٗ وَهُمۡ لَا يَشۡعُرُونَ
English translation: And they ask you to hasten [with] the punishment And if not (for) a term appointed surely (would) have come to them the punishment But it will surely come to them suddenly while they (do) not perceive
Transliteration: wayasta'jilunaka bil-'adhabi walawla ajalun musamman lajaahumu al-'adhabu walayatiyannahum baghtatan wahum la yash'uruna