Surah Al-Mulk (The All Authority), Verse 17

اَمْ اَمِنْتُمْ مَّنْ فِی السَّمَآءِ اَنْ یُّرْسِلَ عَلَیْكُمْ حَاصِبًا فَسَتَعْلَمُوْنَ كَیْفَ نَذِیْرِ ۟

Am amintum man fissamaaa'i ai yursila 'alaikum haasiban fasata'lamoona kaifa nazeer

“Or do ye feel secure that He Who is in Heaven will not send against you a violent tornado (with showers of stones), so that ye shall know how (terrible) was My warning?”

Quran 67:17 (Yusuf Ali Translation)