56هُم وَأَزواجُهُم في ظِلالٍ عَلَى الأَرائِكِ مُتَّكِئونَMuhammad Asadin happiness will they and their spouses on couches recline;1In the Qur'anic descriptions of paradise, the term zill ("shade") and its plural zilal is often used as a metaphor for "happiness" - thus, for instance, in 4:57, where zill zalil signifies "happiness abounding" (see surah 4, note 74) - while the "couches" on which the blessed are to recline are obviously a symbol of inner fulfilment and peace of mind, as pointed out by Razi in his comments on 18:31 and 55:54.