THOSE WHO RECEIVE THEIR BOOK OF RECORD BEHIND THEIR BACK!
VERSES NO.10-15
Following the description of the people of right hand in the preceding verses, it is referred here to unbelievers and sinners and the status of their record of deeds.
When their record of deeds is given to their left hand, they hide it behind themselves for not being seen by the others, but of no use, because it is not possible to hide anything there.
In fact, his misery originates from his evil belief and false supposition for denial of resurrection making him happy and far from God and involved in all desires and sins so much that he derided the invitation of prophets and was rejoicing when joining his family.
However, God was ever seeing him and his deeds and registry of deeds should be an introduction for accounting and reward. Otherwise, it was an idle task.