وَصَدَّقَ بِٱلْحُسْنَىٰ
Sentence structure
وَصَدَّقَ is coordinated with the preceding verbs and is Form II. بِٱلْحُسْنَىٰ is a prepositional phrase linked to it.
Ayah summary
He accepts the best truth as true.
وَصَدَّقَ — And affirmed
Grammar: وَ coordinates; صَدَّقَ is a Form II perfect with understood subject هُوَ.
بِٱلْحُسْنَىٰ — the best
Grammar: بِ is a preposition, ٱل defines, and حُسْنَىٰ is feminine and genitive in position. This phrase is linked to «صَدَّقَ».