وَأَمَّا مَنْ خَفَّتْ مَوَٰزِينُهُۥ ٨
Sentence structure
وَأَمَّا coordinates the contrasting detail. Conditional مَنْ is followed by خَفَّتْ as condition verb; مَوَٰزِينُهُۥ is its nominative subject.
Ayah summary
And the one whose scales of deeds are light will face loss.
وَأَمَّا — And as for
Grammar: وَ coordinates and أَمَّا introduces contrasting detail.
مَنْ — whoever
Grammar: A conditional noun introducing the second condition.
خَفَّتْ — are light
Grammar: A third-person feminine-singular perfect functioning as the condition verb.
مَوَٰزِينُهُۥ — his scales
Grammar: A masculine-plural nominative subject; attached هُ is possessive.