فَإِنْ أَعْرَضُوا۟ فَقُلْ أَنذَرْتُكُمْ صَٰعِقَةًۭ مِّثْلَ صَٰعِقَةِ عَادٍۢ وَثَمُودَ
But if they turn away, then say, "I have warned you of a thunderbolt like the thunderbolt [that struck] 'Aad and Thamud.
Translation · Saheeh International
Surah Fussilat · Ayah 13 of 54