وَأَمَّا مَنْ أُوتِىَ كِتَـٰبَهُۥ وَرَآءَ ظَهْرِهِۦ
Sentence structure
وَأَمَّا begins the counterpart case. مَنْ is a relative topic; passive أُوتِىَ is its relative clause with understood هُوَ as deputy subject. كِتَـٰبَهُۥ is the object and وَرَآءَ ظَهْرِهِۦ an accusative place phrase linked to the verb. The result follows in ayah 11.
Ayah summary
The person given their record behind the back into the left hand will meet severe failure.
وَأَمَّا — But as for
Grammar: وَ resumes and أَمَّا introduces the counterpart detailed case whose result follows in ayah 11.
مَنْ — (him) who
Grammar: A relative pronoun functioning as the topic; the passive clause أُوتِىَ is its relative clause.
أُوتِىَ — is given
Grammar: A Form IV passive third-person masculine-singular perfect with understood هُوَ as deputy subject.
كِتَـٰبَهُۥ — his record
Grammar: كِتَـٰبَ is the accusative object of أُوتِىَ and attached هُۥ its genitive possessor.
وَرَآءَ — behind
Grammar: An accusative adverb of place, annexed to ظَهْرِهِۦ and linked to أُوتِىَ.
ظَهْرِهِۦ — his back
Grammar: ظَهْرِ is the genitive complement of وَرَآءَ and attached هِۦ its genitive possessor.