إِنَّ ٱلْإِنسَـٰنَ لَفِى خُسْرٍ ٢
Sentence structure
إِنَّ is an accusative particle. ٱلْإِنسَـٰنَ is its accusative noun, and the emphatic prepositional phrase لَفِى خُسْرٍ is its predicate.
Ayah summary
Surely the human being is in loss if his diminishing lifetime is not used for good.
إِنَّ — Indeed
Grammar: An accusative particle introducing an emphasized nominal sentence.
ٱلْإِنسَـٰنَ — mankind
Grammar: A defined masculine accusative noun of إِنَّ.
لَفِى — is surely in
Grammar: Emphatic لَ precedes preposition فِى; فِى خُسْرٍ is linked to the omitted predicate of إِنَّ.
خُسْرٍ — loss
Grammar: An indefinite masculine genitive noun governed by فِى.