وَبَنَيْنَا فَوْقَكُمْ سَبْعًا شِدَادًا
Sentence structure
وَبَنَيْنَا is the verb with its attached subject. فَوْقَكُمْ specifies place, سَبْعًا is the object with the understood referent “seven heavens,” and شِدَادًا directly follows it as its adjective.
وَبَنَيْنَا — and We built
Grammar: وَ is a conjunction, بَنَيْ a first-person plural perfect verb, and attached نَا its subject.
فَوْقَكُمْ — above you
Grammar: فَوْقَ is an accusative adverb of place and is annexed to the attached second-person masculine plural pronoun كُمْ in the genitive position.
سَبْعًۭا — seven
Grammar: An indefinite masculine numeral in the accusative and the object of بَنَيْنَا, with the understood referent “seven heavens.”
شِدَادًۭا — strong
Grammar: An indefinite plural accusative adjective directly describing سَبْعًا.