فَوَيْلٌ لِّلْمُصَلِّينَ ٤
Sentence structure
فَ introduces the consequence and وَيْلٌۭ is an indefinite nominative noun. In لِّلْمُصَلِّينَ, لِ governs the defined masculine-plural genitive Form II active participle ٱلْمُصَلِّينَ.
Ayah summary
So woe to those who pray.
فَوَيْلٌۭ — So woe
Grammar: فَ connects the consequence; وَيْلٌۭ is an indefinite masculine nominative topic with an omitted predicate.
لِّلْمُصَلِّينَ — to those who pray
Grammar: Preposition لِ governs ٱلْمُصَلِّينَ; the phrase is linked to the omitted predicate of وَيْلٌۭ.