وَإِذَا رَأَوْهُمْ قَالُوٓا۟ إِنَّ هَـٰٓؤُلَآءِ لَضَآلُّونَ
Sentence structure
In this coordinated condition, رَأَوْهُمْ is the condition and قَالُوٓا۟ the response. The quoted إِنَّ clause is the object of saying: هَـٰٓؤُلَآءِ is its noun and لَضَآلُّونَ its emphatic predicate.
Ayah summary
When they saw the believers, they declared them misguided.
وَإِذَا — And when
Grammar: وَ coordinates the clause; إِذَا is a future non-jussive conditional time adverb.
رَأَوْهُمْ — they saw them
Grammar: A masculine-plural perfect condition verb. Attached و is the subject and هُمْ the object.
قَالُوٓا۟ — they said
Grammar: A masculine-plural perfect serving as the non-jussive conditional response. Attached و is the subject and the final alif is orthographic.
إِنَّ — Indeed
Grammar: An accusative and emphatic particle introducing the reported clause. هَـٰٓؤُلَآءِ is its accusative noun and لَضَآلُّونَ its emphatic predicate; the complete clause is the reported content of قَالُوٓا۟.
هَـٰٓؤُلَآءِ — these
Grammar: A plural demonstrative functioning as the accusative noun of إِنَّ.
لَضَآلُّونَ — surely have gone astray
Grammar: لَ is the displaced emphatic lām. ضَآلُّونَ is a masculine-plural active participle and the nominative predicate of إِنَّ, marked by wāw; final nūn is nominal.