وَإِذَا ٱلنُّجُومُ ٱنكَدَرَتْ
Sentence structure
This condition is coordinated with the first. ٱلنُّجُومُ is nominative in the same omitted-verb pattern, and ٱنكَدَرَتْ is an active perfect verb explaining the event.
Ayah summary
At that time, the stars will fall apart and lose their light.
وَإِذَا — And when
Grammar: وَ coordinates the whole conditional construction with the preceding one. إِذَا is a future non-jussive temporal adverb containing conditional meaning.
ٱلنُّجُومُ — the stars
Grammar: The noun is nominative; here it is the subject of an omitted active verb explained by ٱنكَدَرَتْ.
ٱنكَدَرَتْ — fall and lose their lustre
Grammar: A Form VII active perfect, third-person feminine singular, with an understood هِيَ subject.