﴿ وَلِبُيُوتِهِمْ أَبْوَٰبًۭا وَسُرُرًا عَلَيْهَا يَتَّكِـُٔونَ ﴾

“and [silver] doors for their houses, and [silver] couches whereon to recline,”

and doors of silver for their houses and We would have made for them couches of silver surur ‘couches’ is the plural of sarīr on which they recline