Surah Al-Muzzammil — Ayah 17 (73:17)

English translation (Saheeh International)

Then how can you fear, if you disbelieve, a Day that will make the children white-haired?¹

1. - Another meaning is "How can you avoid [punishment]" on such a Day?

Brief commentary

So how will you protect yourselves - if you reject Allah and deny His messenger - from a long, severe day that will make the head of young children white because of the severity of its horror and its length.