Had it not been for his coherent explanations on Aristotle’s Metaphysics, Avicenna would probably never have been able to understand it; he read Aristotle forty times, but it was just through the straightforward and comprehensive commentaries of Al Farabi that he finally realized Aristotle’s ideas on Metaphysics.

The great Muslim philosopher, logician, and cosmologist, Abu Nasr Muhammad ibn Muhammad Farabi, was born in 872 A.D. in Farab, Khurasan, to Iranian parents. He spent most of his life in Baghdad and from a very early youth started learning the teachings of Islam and the Holy Quran under the training of the best Islamic philosophers and scholars. He traveled to many countries, including Egypt and Syria. He died in 950 or 951 A.D. in Damascus, Syria.

In philosophy, he is considered to be the second in rank after Aristotle, and is called “the second teacher” and on some occasions “the second master” [1]. His wise and easy to understand explanations shed a clear light on the complex philosophy of Aristotle, to the point that many western philosophers owed their appreciation of “the first teacher”’s philosophy to Al-Farabi [2].

Moreover, he is the founder of Islamic philosophy. He genuinely believed in the existence of the first cause -God, Allah- and admitted the limits of human knowledge in understanding the nature of it [3].

 In one of his most notable works “Al-Madina Al-Fadila” (The Virtuous City) which is basically about political philosophy, he argues that the favorable form of government is the one ruled by a prophet or Imam. Accordingly, the city of Medina when it was ruled by Prophet Muhammad (PBUH) was the ideal kind of society that would ultimately guide human beings to everlasting felicity both in this world and the world that is to come.

He also criticized those philosophers who do not utilize their knowledge for the benefit of their society. He compared the philosopher's role in society with a physician’s relation to the body; the body's health is affected by the 'balance of its humors just as the city is determined by the moral habits of its people. The philosopher's duty, he says, is to establish a ‘virtuous’ society by healing the souls of people, establishing justice, and guiding them towards 'true happiness' [4].

He was also a grandmaster of music; “He is said to have created musical compositions. To this day there are melodies in Anatolian music and rags in classical North Indian music attributed to him, sung and performed by masters of these musical genres”[5]. His famous book on music, Kitab al-musiqi al-Kabir ("The Great Book of Music"), is the study of the theory of Persian music and the philosophical principles of music, its cosmic qualities, and influence.

His other well-known book is called Kitab ihsa al-ulum ("On the Introduction of Knowledge"). It consists of eight parts, each dealing with one branch of science such as linguistics, logic, mathematics, astronomy, metaphysics, Islamic jurisprudence, Islamic science of dialectic and discourse, as well as politics[6].

Finally, Al-Farabi, one of the greatest Muslim philosophers, is a universal phenomenon whose innovative and sensible ideas marked a turning point in the history of philosophy. His philosophy was easy to understand and apply to real-life which is the essence of the sharia of Islam; a religion with rules that are highly compatible with human nature and if followed would bring satisfaction as well as peace.

References:

1. Ian Richard Netton. “al-Farabi, Abu Nasr" .Islamic Philosophy from the Routledge Encyclopedia of Philosophy.
2. F.W Zimmermann, Al-Farabi 's Commentary and Short Treatise on Aristotle 's De Interpretation, Oxford, 1981.
3. Ian Richard Netton. Breaking with Athens: Alfarabi as Founder, Applications of Political Theory by Christopher A.Colmo".
4. Charles Butterworth. Ethical and Political Philosophy in Adamson, P, and Taylor, R. The Cambridge Companion to Arabic Philosophy
5. Hussein Nasr, Mehdi Aminrazavi. “An Anthology of Philosophy in Persia," Vol. 1: From Zoroaster to ‘Umar Khayyam”, I.B. 
6. Hamid Taleb Zadeh. Philosophy (Introduction to Islamic philosophy) the field of humanity, for pre-university students.

Once Mu’aviah, the first Umayyad Caliph, ordered Sa’d ibn Abi-Waqass -a famous companion of the Prophet (PBUH & HP)- to insult Imam Ali (AS). Mu’aviah was the enemy of Imam Ali (AS) and would order people to say bad things about him in public. But Sa’d refused to do that.Mu’aviah said: why don’t you insult “Aba-Turab” (Imam Ali)? Sa’d replied: I won’t insult Aba-Turab because I remember him in three events that if those had happened to me it would be better for me than having so many red camels (symbol of richness) Sa’d narrated three stories about Imam Ali (AS) but, here, we mention the third one: 

… Once this verse was revealed to the Prophet (PBUH&HP):

فَمَنْ حَاجَّكَ فِيهِ مِن بَعْدِ مَا جَاءَكَ مِنَ الْعِلْمِ فَقُلْ تَعَالَوْا نَدْعُ أَبْنَاءَنَا وَأَبْنَاءَكُمْ وَنِسَاءَنَا وَنِسَاءَكُمْ وَأَنفُسَنَا وَأَنفُسَكُمْ ثُمَّ نَبْتَهِلْ فَنَجْعَل لَّعْنَتَ اللَّهِ عَلَى الْكَاذِبِينَ ‎﴿٦١﴾‏

Should anyone argue with you concerning him (Jesus), after the knowledge that has come to you, say, ‘Come! Let us call our sons and your sons, our women and your women, our souls and your souls, then let us pray earnestly, and call down Allah’s curse upon the liars.’ (61) (The Holy Quran, 3:61)

The Prophet (PBUH & HP) called Ali, Fatimah, Hassan and Hussain and then said: “O God! These are my family” (1)

The Christians of Najran 

When Prophet Muhammad (PBUH & HP) sent messages to the kings around the world and invited them to Islam, he also wrote a letter to the bishop of Najran’s church (a city in Arabia). 

They sent a group of priests and Christian scholars to talk with the Prophet (PBUH & HP) and discuss with him on the Message of Islam. They discussed on the question: Is Jesus the son of God or not? 

Each side insisted on their beliefs and the Christians wouldn’t accept that their belief is wrong. Then this verse was revealed to the Prophet (PBUH & HP):

Indeed the case of Jesus with Allah is like the case of Adam: He created him (Adam) from dust, then said to him, ‘Be,’ and he was. (59) This is the truth from your Lord, so do not be among the skeptics. (60) Should anyone argue with you concerning him (Jesus), after the knowledge that has come to you, say, ‘Come! Let us call our sons and your sons, our women and your women, our souls and your souls, then let us pray earnestly, and call down Allah’s curse upon the liars.’ (61) (The Holy Quran, 3:59-61)

So Allah said to the Prophet (PBUH & HP) that the only way to clarify which side is telling the truth is Mubahala.

What does Mubahala mean?

When two groups of people have an argument with each other, after so many discussions with no results, they come to a place and call down Allah’s curse upon the liars. They pray that Allah punishes the ones who tell lies right in the time. This is called Mubahala. 

The Prophet’s family 

So, both sides agreed and promised to be present on a specific day (Du al-Hijjah the 24th) in the desert for Mubahala. In the morning of Mubahala day, the Messenger of Allah came to Imam Ali’s house and took Imam Hassan and Imam Hussain’s hands. The Prophet, Imam Ali, Lady Fatimah, Imam Hassan and Imam Hussain went to the desert. 

When the Christians saw them, asked: who are those people with Muhammad?

They were answered: that man is his cousin and son in law. He loves Ali the most. Those children are his grandsons and that woman is his lovely daughter.

The Christians said: Muhammad is sitting there like the real Prophets. If he wasn’t right, he wouldn’t bring the closest ones with him for Mubahala. He must be so sure about his message. If we participate in this Mubahala, there will be no Christian left in Najran till next year. 

So they refused to participate in the Mubahala and went back to Najran. 

What do Sunni scholars say about this event?

•    Hakim an-Neisaboori, one of the most prominent Sunni scholars, says:

“There are so many historical records concerning this event that the Messenger (PBUH & HP) brought Ali, Fatimah, Hassan and Hussain in the Mubahala day and then said: “these are our sons and our souls and our women so you (Christians) bring your sons and souls and women for Mubahala so that we call down Allah’s curse on the liars” (2)

•    Ibn Kathir, another great Sunni scholar also admits that this verse is about Imam Ali, Lady Fatimah, Imam Hassan and Imam Hussain. He says that Jabir ibn Abdullah al-Ansari (one of the most important companions of the Prophet) said:

“By ‘our souls’ Allah means the Prophet (PBUH & HP) and Imam Ali (AS)” (3)

Here soul, in Arabic culture, means that Imam Ali (AS) is so close to the Prophet (PBUH & HP) that there is no difference between him and the Prophet; it’s like they are one soul in two bodies. Obviously, the only difference is that Imam Ali is not a prophet but on the other levels Imam Ali and the Prophet are the same. 

Imam Reza (AS) and Mubahala 

Sheik Mufid, one of the greatest Shiite scholars, narrates a dialogue between Imam Reza (AS) and Ma’moon (an Abbasid Caliph):

Once, Ma’moon asked Imam Reza (AS) about the best privilege of Imam Ali (AS) that the Quran has mentioned. 

Imam Reza (AS) said: it is the event of Mubahala. In that day when the verse was revealed to the Prophet (PBUH&HP), he called Imam Hassan and Imam Hussain, who were his sons, Lady Fatimah, who was the woman mentioned in the Quran, and finally Imam Ali which was the soul mentioned in the Book. 

Imam Reza (AS) also said: clearly the Prophet (PBUH & HP) is the most supreme person in the world. So it is obvious that his soul which is Imam Ali is also the most supreme creature. 

Ma’moon said: why don’t you think that here soul means the Prophet himself and no one else?

Imam Reza (AS) said: because it doesn’t make sense to call yourself and bring yourself for Mubahala. When you call somebody or order somebody to come with you, it is obvious that the person is not yourself. And we all know that the Prophet brought no one except Imam Ali; so undoubtedly, Imam Ali is his soul. 

Ma’moon said: with this answer, there is no question left! (4)

Resources 

1.  Sahih Muslim, vol.4, Pg.1871
2.  Ma’rifah al-Olum al-Hadith, Hakim an-Neisaboori, vol.1, Pg.50
3. Tafsir al-Quran al-Azim, Ibn Kathir, published by dar al-Kotob al-Elmiyah, vol.2, Pg.47
4.  Al-Fosul al-Mukhtarah, Sheik Mufid, vol.1, Pg.38