أَن جَآءَهُ ٱلْأَعْمَىٰ
Sentence structure
The clause introduced by أَن gives the reason through an understood causal connection. جَآءَ is the verb, its attached pronoun the fronted object, and ٱلْأَعْمَىٰ the subject; recognized analyses differ over the precise attachment of the clause.
Ayah summary
This happened when the blind Companion came to him.
أَن — Because
Grammar: أَن is a masdari particle; the following clause is interpreted as a verbal noun.
جَآءَهُ — came to him
Grammar: A third-person masculine singular perfect verb. Attached هُ is its fronted object; the complete clause is the complement of masdari أَن.
ٱلْأَعْمَىٰ — the blind man
Grammar: ٱلْ is the definite article. nominative noun functioning as the subject.