Three Categories of People on the Day of Resurrection
وَكُنتُمْ أَزْوَاجًا ثَلَاثَةً (and you will be [ divided into ] three categories...56:7). Ibn Kathir says that people will be divided into three different categories on the Day of Resurrection. One group will be on the right side of Allah's Throne, and they are those who were brought forth from the right side of the loin of 'Adam (علیہ السلام) . These people will be given their Ledgers of Deeds in their right hands and will be taken to the right side of the Divine Throne. They are the inmates of Paradise.
The second category comprises those who will be placed to the left of Allah's Throne. These are people who were brought forth from the left side of the loin of 'Adam (علیہ السلام) . This category will be given their Ledgers of Deeds in their left hands and will be taken to the left side of the Divine Throne. They are the inhabitants of the Fire. [ We seek refuge in Allah from their behaviour pattern!]
The third category consists of As-sabiqun [ the foremost ] who are described as Al-muqarrabun [ the fortunate believers who are granted special nearness to Allah ]. They will be placed in front of the Divine Throne. They include the Messengers, the Prophets, Siddiqin, martyrs and the friends of Allah. They are fewer than those on the right side. Towards the end of the Surah, the description of the three categories will be taken up again to mention that some signs start appearing, right from the time of death of a person, to indicate in which category he or she is going to fall.