Furthermore...
Furthermore, they maintain that upholding this duty does not necessarily require the existence of an Imam, or leader, since it is the duty of all Muslims to uphold it. And yet, they also recognize that some aspects of this duty are the prerogatives of the leaders of Muslims, such as executing the Islamic penal code, preserving the integrity of Muslim territories, and other government affairs.
Mu’tazilite theologians discussed those fundamental tenets in detail, in works, such as al Usul al-Khamsa (the Five Fundamentals) by Judge Abdul Jabbar al-Mu’tazili, who was a contemporaneous to Sahib bin Abbad and as-Sayyid al-Murtadha Allamul Huda. As is evident, monotheism and justice are the only tenets that can be considered as those of belief/faith. As for the remaining three fundamentals, they are distinctly Mu’atazilite.
Even “Justice”, which is a religious necessity, as is evident in the Qur’an, being one of the five fundamentals of religion, has been considered as one of their five tenets, because they deem it among the features of their school of thought. Otherwise, it is not different from the Divine Omniscience and Omnipotence that are among the necessities of religion and its beliefs. According to the Shia School of Thought, Justice is one of the five fundamentals of religion.
At this point, one may pose a question as to the uniqueness of this fundamental that made it one of the five fundamentals. That is, as God is Just, He is Omniscient, Living, Hearing, Seeing, and Omnipotent. Man has to believe in all those Attributes. So, why was Justice singled out with distinction above the rest? The answer to this question is that Justice does not have any merit over and above any other Attributes.
As for Shia theologians, they have made it one of the five fundamentals of the faith, whereas the Ash’arites, who constitute the majority of Sunnis, denied it, unlike the other Attributes, such as Omniscience, Life, and Will. Accordingly, believing in Justice is one of the characteristics of Shia beliefs, as is the case with the Mu’tazilites.
Therefore, the five tenets are the main features of the Mu’tazilite School of Thought, despite the fact that not all their beliefs are reflected in those five tenets, for they put forward and discussed many subjects relating to divinity, natural sciences, sociology, and the humanities. Monotheism Monoteism is of different orders and categories.