ثُمَّ رَدَدْنَـٰهُ أَسْفَلَ سَـٰفِلِينَ ٥
Sentence structure
ثُمَّ coordinates with sequence. رَدَدْنَـٰهُ has attached subject نَا and object هُ. أَسْفَلَ سَـٰفِلِينَ is linked to the verb as an annexed expression.
Ayah summary
Then denial and evil conduct bring the human being down to the lowest state.
ثُمَّ — Then
Grammar: A coordinating particle indicating sequence with delay.
رَدَدْنَـٰهُ — We returned him
Grammar: A perfect with attached subject نَا and masculine-singular object هُ.
أَسْفَلَ — the lowest
Grammar: A masculine accusative elative expression linked to رَدَدْنَـٰهُ and annexed onward.
سَـٰفِلِينَ — of the low
Grammar: A masculine-plural genitive complement of أَسْفَلَ.