إِنَّ ٱلْأَبْرَارَ لَفِى نَعِيمٍ
Sentence structure
إِنَّ makes ٱلْأَبْرَارَ accusative as its noun. The emphatic prepositional phrase لَفِى نَعِيمٍ is its predicate.
Ayah summary
The righteous will be amid the blessings and comforts of Paradise.
إِنَّ — Indeed
Grammar: an accusative and emphatic particle.
ٱلْأَبْرَارَ — the righteous
Grammar: A definite accusative plural noun functioning as the noun of إِنَّ.
لَفِى — (will be) surely in
Grammar: لَ is the displaced emphatic lām and فِى a preposition; the phrase forms the predicate of إِنَّ.
نَعِيمٍ — bliss
Grammar: genitive noun functioning as the genitive complement.