﴿ هُمْ وَأَزْوَٰجُهُمْ فِى ظِلَٰلٍ عَلَى ٱلْأَرَآئِكِ مُتَّكِـُٔونَ ﴾

“in happiness will they and their spouses on couches recline;”

they hum the subject and their spouses beneath the shade zilāl is the plural of zulla or zill and is the predicate in other words no blinding sunlight affects them reclining upon muttaki’ūna is a second predicate connected to ‘alā ‘upon’ couches arā’ik is the plural of arīka which is a bed inside a curtained canopy or the bedding therein.