وَجَعَلْنَا سِرَاجًا وَهَّاجًا
Sentence structure
وَجَعَلْنَا is a coordinated verbal clause. سِرَاجًا is its object and وَهَّاجًا is an adjective describing the lamp as intensely radiant.
وَجَعَلْنَا — and We made
Grammar: وَ is a conjunction, جَعَلْ a perfect verb, and attached نَا its first-person plural subject.
سِرَاجًۭا — a lamp
Grammar: An indefinite masculine singular accusative noun and the object of جَعَلْنَا.
وَهَّاجًۭا — intensely radiant
Grammar: An intensive-form masculine singular adjective, indefinite and accusative, describing سِرَاجًا.