Aamir bil ma'ruf (one who orders to obey God's command)...
Aamir bil ma'ruf (one who orders to obey God's command), nahi `an al‑munkar (one who forbids indecent or illegitimate deeds), `alim (learned), nasih (admonishes), zalim (cruel, oppressive, unjust), khalifah (deputy), rabbani (Divine), rabbi (rabbi), kahin (priest), ruhban (monks), ahbar (Jewish scribes), jabbar (tyrant), `ali (sublime), mustali (superior), mustakbir (tyrant, proud), mustad`af (tyrannized, oppressed), musrif (lavish, prodigal), mutraf (affluent), taghut (idols), mala ` (chieftains), muluk (kings), ghani (rich), faqir (poor, needy), mamluk (the ruled), malik (owner, master), hurr (free, liberated), `abd (slave, servant), rabb (master, lord), etc.
Furthermore, there are other words which are apparently similar to these words, such as: musalli (one who prays), mukhlis (sincere, devoted), sadiq (loyal, true), munfiq (charitable), mustaghfir (one who asks for God's forgiveness), ta'ib (penitent), abid (adorer), hamid (one who praises), etc. But these words have been used only for the purpose of describing kinds of behaviour and not to refer to certain social groups, poles, or classes.
It is essential to study the connotation and meaning of the verses in which the terms referred to earlier are used, in particular the words related to social orientations. It is also to be seen whether the above mentioned terms can be divided into two distinct groups. And supposing that these terms refer to two distinct groups, it should be determined who are their referents.
For example, can all of them be classified in two groups of believers and unbelievers, according to a classification based on religious belief, or into two groups of the rich and the poor according to their economic position? In other words, it is to be analyzed whether these divisions are ultimately based on any one primary classification, and whether or not all the other sub‑divisions are essentially secondary and relative. If there is only one principle of division, it has to be determined.
Some people claim that the Qur’anic view suggests a bipolar society. They say according to the Qur’an, society is divided into two classes: one is the ruling, dominating, and exploiting class, and the other consists of the ruled, exploited, and subjugated people. The ruling class consists of those whom the Qur’an calls `mustakbirun', i.e. the arrogant oppressors and exploiters. The subjugated class is of those who are called by the Qur’an `mustad'afun' (the weakened).