Surah Az-Zumar, Verse 55
وَٱتَّبِعُوٓا۟ أَحْسَنَ مَآ أُنزِلَ إِلَيْكُم مِّن رَّبِّكُم مِّن قَبْلِ أَن يَأْتِيَكُمُ ٱلْعَذَابُ بَغْتَةًۭ وَأَنتُمْ لَا تَشْعُرُونَ
Translation — Sahih International
And follow the best of what was revealed to you from your Lord before the punishment comes upon you suddenly while you do not perceive,
Source
Kur'an-ı Kerim, Zümer Suresi 39:55
https://kuran.diyanet.gov.tr/mushaf/kuran-meal-2/39-suresi-55-ayet