According to search-discovered classical Islamic scholarship, the 'Companions of the Left' (Ashab al-Shimal) is a major eschatological category in the Quran, primarily detailed in Surah Al-Waqi'ah (verses 56:41-56, 92-94). Ibn Kathir explains that this term refers to the people of Hellfire, who will be given their book of deeds in their left hand, a sign of their condemnation. The Quranic narrative synthesizes their fate with their worldly actions: they are those who lived a life of heedless luxury, denied the reality of resurrection, and persisted in great sins. Al-Qurtubi's analysis of the verses highlights that their punishment—a torment of scorching winds, scalding water, and suffocating black smoke—is a direct and terrifying inversion of the worldly comforts they wrongfully pursued. The synthesis across these verses establishes Ashab al-Shimal as a powerful divine warning, illustrating the ultimate consequence of choosing disbelief and materialism over faith and accountability.