﴿ وَأَمَّا مَنْ أُوتِىَ كِتَٰبَهُۥ وَرَآءَ ظَهْرِهِۦ ﴾

“But as for him whose record shall be given to him behind his back;”

(But whoso is given his account) the account of his evil deeds (behind his back) in his left hand, referring here to al-Aswad Ibn 'Abd al-Asad, the brother of Abu Salamah,