سورة الفجر

Imam Baqir (peace be upon him): کَلَّا إِذَا دُکَّتِ الْأَرْضُ دَکًّا دَکًّا [Nay! when the earth is made to crumble to pieces], meaning the earthquake.

The Messenger of Allah (peace be upon him and his family): Imam Ali (peace be upon him) said: The Messenger of Allah (peace be upon him and his family) said: "Do you know the interpretation of this verse: کَلَّا إِذَا دُکَّتِ الْأَرْضُ دَکًّا دَکًّا [Nay! when the earth is made to crumble to pieces]?" [Then] he said: "When the Day of Resurrection arrives, Hell will be brought forth with seventy thousand reins in the hands of seventy thousand angels. Then it will bolt so fiercely that if Allah the Exalted did not hold it back, it would surely burn the heavens and the earth."

Ibn Abbas (may Allah have mercy on him): دُکَّتِ الْأَرْضُ [the earth is made to crumble], meaning on the Day of Resurrection it will be spread out like a spread tablecloth.