Tafsir al-Jalalayn — al-Inshiqaq 84:8

he will receive an easy reckoning which simply entails the presentation of his deeds to him as in the hadīth of the two Sahīhs of Bukhārī and Muslim — in which there is also a hadīth saying ‘He who is reckoned with at length will be destined for perdition’ — and after this presentation of […]

Tafsir al-Jalalayn — al-Inshiqaq 84:10

But as for him who is given his book from behind his back — and this is the disbeliever whose right hand is chained to his neck and whose left hand by which he is given the book is placed behind his back