ٱلَّذِى يَصْلَى ٱلنَّارَ ٱلْكُبْرَىٰ
Sentence structure
ٱلَّذِى is an adjective of ٱلْأَشْقَى. يَصْلَى is its relative-clause verb with an understood subject; ٱلنَّارَ is the object and ٱلْكُبْرَىٰ its accusative adjective.
Ayah summary
He will enter the great Fire.
ٱلَّذِى — The one who
Grammar: A masculine-singular relative noun functioning as a nominative adjective of ٱلْأَشْقَى.
يَصْلَى — will burn
Grammar: A third-person masculine-singular indicative imperfect in the relative clause with understood subject هُوَ.
ٱلنَّارَ — (in) the Fire
Grammar: ٱل is the definite article; نَّارَ is a feminine-singular accusative object of يَصْلَى.
ٱلْكُبْرَىٰ — [the] great
Grammar: ٱل is the definite article; كُبْرَىٰ is a feminine-singular accusative adjective of ٱلنَّارَ, with an estimated fatḥah.