إِنَّ إِلَىٰ رَبِّكَ ٱلرُّجْعَىٰٓ ٨
Sentence structure
إِنَّ emphasizes the clause. إِلَىٰ رَبِّكَ is the fronted predicate and ٱلرُّجْعَىٰٓ its delayed accusative noun.
Ayah summary
Surely everyone must return to your Lord alone.
إِنَّ — indeed
Grammar: An accusative particle of emphasis.
إِلَىٰ — to
Grammar: A preposition introducing the fronted predicate phrase.
رَبِّكَ — your Lord
Grammar: A genitive noun after إِلَىٰ; كَ is possessive.
ٱلرُّجْعَىٰٓ — the return
Grammar: A defined feminine delayed noun of إِنَّ, morphologically accusative.