﴿ مُتَّكِـِٔينَ عَلَىٰ سُرُرٍۢ مَّصْفُوفَةٍۢ ۖ وَزَوَّجْنَٰهُم بِحُورٍ عِينٍۢ ﴾

“reclining on couches [of happiness] ranged in rows!” And [in that paradise] We shall mate them with companions pure, most beautiful of eye.”

يَوْمَ تَمُورُ‌ السَّمَاءُ مَوْرً‌ا (...the Day when the sky will tremble, a horrible trembling, ...52:9) The lexicographical denotation of the word mawr is violent shaking, or movement caused by unrest. This verse describes the violent movement of the heavens on the Day of Resurrection.