Surah Al-Muzzammil, ayah 17

فَكَيۡفَ تَتَّقُونَ إِن كَفَرۡتُمۡ يَوۡمٗا يَجۡعَلُ ٱلۡوِلۡدَٰنَ شِيبًا ١٧

Fakayfa tattaqūna in kafartum yawman yaj'alul-wildāna shībā

Then how can you fear, if you disbelieve, a Day that will make the children white-haired?¹⁷⁸³