Surah Al-Muzzammil, Verse 17

فَكَيۡفَ تَتَّقُونَ إِن كَفَرۡتُمۡ يَوۡمٗا يَجۡعَلُ ٱلۡوِلۡدَٰنَ شِيبًا١٧

fakayfa tattaqūna in kafartum yawman yajʿalu l-wil'dāna shīban

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