The Qur'ān says, “Indeed, God enjoins justice and kindness.” (16:90) Given that the context of this verse pertains to the responsibilities of human beings toward their society, the term ‘justice’ should be interpreted as ‘social justice’. Thus, God has ordered human beings to uphold justice.
'Allāma Ṭabāṭabā'ī has said that social justice denotes treating each member of society in accordance with their merit and ensuring everyone receives their rights. This social quality is an obligation that responsible individuals must observe [1]

The establishment of social justice is one of the most important teachings of divine prophets ('a). Hence they strived to explain its essence and scientific principles, inculcate its spirit within humanity, and compel its acceptance as a cornerstone upon which earthly life depends. Anyone with basic knowledge of religious teachings understands that the establishment of social justice enlivens God's religion. 

Thus, until justice prevails, true religion remains incomplete. Similarly, until universal social justice takes root, the fulfillment of religious and legal obligations remain unattained. [2]

The absence of social justice historically has been the cause of most revolutions. Noble-minded reformers have consistently started their movements with the of establishing social justice and eradicating discrimination. The Prophet (ṣ) said that “Justice in social struggle is like a guardian shield which protects people from oppression; and it is like a stable paradise that perpetually bestows its blessings” [3]

Although it is necessary for everyone to respect one another's rights, it is more important for a leader [to respect human rights]. In this regard, Imām 'Alī ('a) told his commanders that neglecting people's rights equates to ruin [4]. Additional, Imām Riḍā ('a) said that the Household (Ahl al-Bayt) of the Prophet (ṣ) are guardians and protectors of the believers' rights [5]

However, it is not solely leaders who must foster social justice; Islām has said both leaders and followers possess rights. Social justice can only thrive when everyone's rights are upheld. Imām 'Alī ('a) said that mutual respect between leaders and followers results in the elevation of righteousness, the revelation of religious principles, and the solidification of just characteristics.[6]

Characteristics of Social Justice

1.    Meritocracy

One of the most important characteristics of social justice is meritocracy, which means entailing the assignment of roles and responsibility based on individual merit. Justice mandates that the most qualified individuals are given precedence for opportunities and higher positions. 

Imām 'Alī ('a) instructed Mālik Ashtar to appoint individuals to different positions in accordance with their merit (Nahj al-Balāgha, letter to Malik Ashtar). The Prophet (s) emphasized that it is treachery to appoint less qualified people to positions of authority [7]

2.    Prioritizing the Rights of the Impoverished and Needy

Another characteristic of social justice is paying attention to the rights of the poor and needy. Injustice is a contributing factor to poverty, which in turn breeds various hardships. Luqman said that of all the bitterness he had encountered, poverty was the harshest. The Prophet (s) said that poverty, pain, enmity, and fire are never trivial [8], and that poverty represents a significant form of death [9]

These reports show that leaders have heavy responsibilities, because the poor need justice more than other people. 

3.    Respecting People's Rights 

When oppression becomes prevalent in society, leaders should not merely distance themselves from it; they ought to stand up and fight for the rights of the oppressed. In fact, all individuals must resist remaining silent when others endure oppression, as passivity equates to complicity in oppression.

Furthermore, not only oppression destroys everything, including culture, economics, wisdom, ability, talent, innovation, etc. but also it is the biggest obstacle to establish justice within society. Imam 'Alī ('a) asserted that ending oppression is a prerequisite for justice.

4.    Equity and Impartiality

It has been reported that one day a rich man and a poor man were sitting next to each other. The rich man pulled his face at the poor man and adjusting his clothes. Observing this the Prophet (ṣ) asked the rich man “Are you afraid that some of his poverty will be transmitted to you?” [10]

The Prophet (s), both in words and acts, paid attention to this important characteristic. For example, when a woman from the Banī Makhzūm tribe committed theft and the people asked the Prophet (s) to judge, her family, who were still influenced by the customs of the class system, considered execution of punishment to be shameful for their aristocratic family. As a result, they started looking for ways to prevent the punishment. To this end, they coerced Usama ibn Zayd, whom the Prophet (s) held in deep affection, to intercede with the Prophet (s) and halt the punishment. However, scarcely had Usama begun to speak when the Prophet (s) grew angry and said no one should stop him from implementing God's laws. Usama promptly sought forgiveness. Later that day, the Prophet (s), aiming to dispel any perception of favoritism, addressed the incident in a speech. He said “Throughout history, tribes and nations declined and vanished due to favoritism in justice’s administration. When both an aristocrat and a commoner committed the same crime, they would punish the commoner while granting impunity to the aristocrat. I swear by the God in whose hands hold my life that I shall spare no one from punishment, regardless of their social standing, whether high or low” [11]

On a different occasion, when Umm Hānī, Imām Alī's sister, went to see him, the Imam gave her twenty dirhams. When she asked her non-Arab bondswoman about her received amount, the female slave said she had also been given twenty dirhams. Incensed by this equality, Umm Hānī confronted her brother, Imam Ali, in protest. In response, the Imam sent her back with these words: “Go back, and may God forgive you. In the Book of God, we have not found any preference for Ishmael over Isaac” [12]

5.    Distinction between the Benevolent and the Malevolent

A leader must avoid treating benevolent and malevolent individuals equally, as this engenders injustice. Imām Alī ('a) instructed Mālik Ashtar to avoid treating benevolent and malevolent individuals equally, because doing so could discourage the benevolent and embolden the malevolent. Instead, everyone should be rewarded according to their deeds.[13]
   

       
          references 

1. (Al-Mīzān fī Tafsīr al-Qur'ān, vol. 24, pp. 243-246).
2. (Al-Ḥayāt, vol. 2, p. 97).
3. (al-Ḥadīth – Riwayāt-e Tarbiyyatī, vol. 2, p. 265). 
4. (Nahj al-Balāgha, letter no. 79)
5. (Musnad al-Imām al-Riḍā, ('a), vol. 1, p. 136). 
6. (Nahj al-Balāgha, sermon no. 216). 
7. (Al-Ta'ajub, p. 59).
8. (Nahj al-Faṣāha, saying no. 252)
9. (Nahj al-Balāgha, saying no. 163).
10. (Majmu'at Waram, vol. 1, p. 214).
11. (Ṣaḥīḥ Bukhārī, vol. 5, p. 152).
12. (Biḥār al-Anwār, vol. 40, p. 106).
13. (Nahj al-Balāgha, letter no. 53). 

The debates and discussions regarding the relationship between ethics and economy in Islam are one of the most controversial and never-ending ones in the history of economics. To have a brief grasp of this issue, let’s take a look at some of the arguments and what Islam thinks of this relationship.

Many of the modern economists believe that economic issues, just like other materialistic ones, are only governed by specific natural and scientific rules that can be examined through empirical evaluations [1]. Accordingly, since ethical and moral matters cannot be understood through scientific ways of assessment and are not empirical, then they cannot be in any way related to the science of economy and business.

While it is true that both the economy and natural sciences are based on the principle of causality, the nature of this relationship entirely differs in each one of them. That is, cause and effect work for natural phenomena in a deterministic way, while in the case of the economy, one party -human beings- in this relationship is capable of choosing based on his/her own free will [2].

In other words, in economic issues, this law of causality appears in an indeterministic way, since human beings are born naturally to be independent and free to choose. So, here comes the issue of ethics through which human values would be defined, and their choice would be directed.

Moreover, the other reason that some economists believe in the separation of economy and ethics roots back in their worldview, that is their view of human being and their relationship with the world and their Creator.

This opinion is mainly based on the humanistic and philosophical principles of capitalistic societies such as Deism, Humanism, Individualism, and Utilitarianism, all of which exclude God and spiritual matters and regard human beings and his desires as the sole purpose of life. On the other hand, according to the Islamic worldview, God is the center and pivot of the universe in which human beings are His successors [3].

Consequently, the whole of nature with all its resources is given to humankind as a kind of loan which he can only use for a specific period. Furthermore, Islam considers two aspects of human beings: one spiritual and the other material, both sides of him/her should be taken into account in all his/her activities, including business. As a result, he is bound to execute financial affairs concerning ethical and moral principles.

According to the Holy Quran, a person who observes moral and ethical principles in his financial affairs would develop some characteristics in his life regarding materialistic issues, such as

1. Being observant of other people’s economic interests and sometimes preferring their interests over his/her own [4],

2. Not being dependent on his/her wealth, only using it with the intention of God’s satisfaction and serving the people in need [5],

3. Showing self-restraint and patience when facing difficulties, not losing his/her control at the time of prosperity, and avoiding extravagance and ostentation [6],

4. Having foresight and deep insight into the way he/she earns and spends money [7].

To conclude, an economic system without moral principles will have no result other than causing injustice and dissatisfaction both for each individual and the society in which he/she lives. Ethical issues, specifically of Islamic kind, should be salient in all aspects of the economy -e.g., production, distribution, spending, etc.- for the people in society to reach a desirable environment for lawful and satisfactory business and trading [8].

References:

1. Tafazzoli, Freydoon. Tarikhe Aghayede Eghtesadi (A History of Economic Ideologies). 1st ed. Tehran, Nei Publication
2. for more information about Islam’s idea regarding human beings willpower see the Holy Quran: 18:29, 76:3 and 13:11.
3. 1:30
4. 59:9
5. 1:265, 51:19
6. 11:10-11
7. 35: 29-30
8.  Iravani, Javad. Akhlaghe Eghtesadi Az Didgahe Quran va Hadith. Majaleye Takhasosie Elahiat va Hughugh 14, 1383. P 90-100.