إِنَّ هَـٰذَا لَفِى ٱلصُّحُفِ ٱلْأُولَىٰ
Sentence structure
إِنَّ opens the emphatic clause and هَـٰذَا is its noun. In لَفِى, لَ emphasizes and فِى begins the predicate phrase; ٱلصُّحُفِ is genitive and ٱلْأُولَىٰ its adjective.
Ayah summary
This same teaching is written in the earlier scriptures.
إِنَّ — Indeed
Grammar: An accusative/emphatic particle opening a nominal clause.
هَـٰذَا — this
Grammar: A masculine-singular demonstrative pronoun functioning as the noun of إِنَّ in the accusative position.
لَفِى — surely (is) in
Grammar: لَ is the emphatic lām and فِى a preposition; the phrase beginning here supplies the predicate of إِنَّ.
ٱلصُّحُفِ — the Scriptures
Grammar: ٱل is the definite article; صُّحُفِ is a feminine-plural genitive noun governed by فِى.
ٱلْأُولَىٰ — [the] former
Grammar: ٱل is the definite article; أُولَىٰ is a feminine genitive adjective of ٱلصُّحُفِ, with an estimated kasrah.