Mohammed the last prophet
The Prophet as the founder of Islam and the messenger of God's revelation to mankind is the interpreter par excellence of the Book of God; and his Hadith and Sunnah, his sayings and actions are, after the Qur'an, the most important sources of the Islamic tradition.
piritual Nature
The spiritual nature of the Prophet is veiled in his human one and his purely spiritual function is hidden in his duties as the guide of men and the leader of a community. It was the function of the Prophet to be not only a spiritual guide, but also the organizer of a new social order with all that such a function implies. And it is precisely this aspect of his being that veils his purely spiritual dimension from foreign eyes.
Outsiders have understood his political genius, his power of oratory, his great statesmanship, but few have understood how he could be the religious and spiritual guide of men and how his life could be emulated by those who aspire to sanctity. This is particularly true in the modern world in which religion is separated from other domains of life and most modern men can hardly imagine how a spiritual being could also be immersed in the most intense political and social activity.
Social Nature
The Prophet did participate in social life in its fullest sense. He married, had a household, was a father and moreover he was ruler and judge and had also to fight many wars in which he underwent painful ordeals. He had to undergo many hardships and experience all the difficulties which human life, especially that of the founder of a new state and society, implies. But within all these activities his heart rested in contentment with the Divine, and he continued inwardly to repose in the Divine Peace. In fact his participation in social and political life was precisely to integrate this domain into a spiritual centre.
Contemplative Nature
The Prophet entertained no political or worldly ambition whatsoever. He was by nature a contemplative. He often spent long periods in the cave of Hira' in solitude and meditation. He did not believe himself to be by nature a man of the world or one who was naturally inclined to seek political power among the Quraysh or social eminence in Meccan society, although he came from the noblest family. It was in fact very painful and difficult for him to accept the burden of prophecy which implied the founding of not only a new religion but also a new social and political order.
Marriages
The marriages of the Prophet are not at all signs of his lenience vis-a-vis the flesh. Multiple marriage, for him, as is true of Islam in general, was not so much enjoyment as responsibility and a means of integration of the newly founded society. The multiple marriages of the Prophet, far from pointing to his weakness towards 'the flesh', symbolize his patriarchal nature and his function, not as a saint who withdraws from the world, but as one who sanctifies the very life of the world by living in it and accepting it with the aim of integrating it into a higher order of reality.
Harshness, Kindness and Compassion
The Prophet exercises the utmost kindness possible and was harsh only with traitors. Now, a traitor against a newly founded religious community, which God has willed and whose existence is a mercy from heaven for mankind, is a traitor against the Truth itself. The harshness of the Prophet in such cases is an expression of Divine Justice. As to what concerned his own person, the Prophet was always the epitome of kindness and generosity.
Also the Prophet was not certainly without love and compassion. Although the Prophet was in a sense a king or ruler of a community and a judge and had to deal according to justice in both capacities, he was at the same time one whose being was anchored in the love for God.
From the Muslim point of view, the Prophet is the symbol of perfection of both the human person and human society.
Piety, Combativeness, Magnanimity
The universal characteristics of the Prophet are not the same as his daily actions and day to day life. They are, rather, characteristics which issue forth from his personality as a particular spiritual prototype. Seen in this light there are essentially three qualities that characterize the Prophet.
First of all the Prophet possessed the quality of piety in its most universal sense, that quality which attaches man to God. The Prophet was in that sense pious. He had a profound piety which inwardly attached him to God, that made him place the interest of God before everything else including himself.
Secondly he had a quality of combativeness, of always being actively engaged in combat against all that negated the Truth and disrupted harmony. Externally it meant fighting wars, either military, political or social ones, the war which the Prophet named the 'little holy war' [al-jihad al-asghar]. Inwardly this combativeness meant a continuous war against the carnal soul [nafs], against all that in man tends towards the negation of God and His Will, the 'great holy war' [al-jihad al-akbar].
If a religion is to be an integral part of life it must try to establish peace in the most profound sense, namely to establish equilibrium between all the existing forces that surround man and to overcome all the forces that tend to destroy this equilibrium. No religion has sought to establish peace in this sense more than Islam. It is precisely in such a context that war can have a positive meaning as the activity to establish harmony both inwardly and outwardly and it is in this sense that Islam has stressed the positive aspect of combativeness.
The Prophet was faced from the beginning of his prophetic mission with the task of wielding the sword of Truth, of establishing equilibrium and in this arduous task he had no rest. His rest and repose was in the heart of the holy war [jihad] itself and he represents this aspect of spirituality in which peace comes not in passivity but in true activity. Peace belongs to one who is inwardly at peace with the Will of Heaven and outwardly at war with the forces of disruption and disequilibrium.
Finally, the Prophet possessed the quality of magnanimity in its fullness. His soul displayed a grandeur which every devout Muslim feels. He is for the Muslim nobility and magnanimity personified.
Strength, Nobility and Serenity
To focus more sharply on the personality of the Prophet, the qualities can be enumerated as strength, nobility and serenity or inner calm.
Strength is outwardly manifested in the little holy war and inwardly in the great holy war. It is this great jihad which is of particular spiritual significance as a war against all those tendencies which pull the soul of man away from the Centre and Origin and bar him from the grace of heaven.
The nobility or generosity of the Prophet shows itself most of all in charity towards all men and more generally towards all beings.
The aspect of serenity, which also characterizes all true expressions of Islam, is essentially the love of truth. It is to put the Truth before everything else. It is to be impartial, to be logical on the level of discourse, not to let one's emotions color and prejudice one's intellectual judgment. It is not to be a rationalist, but to see the truth of things and to love the Truth above all else. To love the Truth is to love God who is the Truth, one of His Names being the Truth [al-haqq].
In Islam, when one thinks of the Prophet who is to be emulated, it is the image of a strong personality that comes to mind, who is severe with himself and with the false and the unjust, and charitable towards the worlds that surrounds him. On the basis of these two virtues of strength and sobriety on the one hand and charity and generosity on the other, he is serene, extinguished in the Truth.
He is that warrior on horseback who halts before the mountain of Truth, passive towards the Divine Will, active towards the world, hard and sober towards himself and kind and generous towards the creatures about him.
The second Shahadah, Muhammadun rasul Allah [Muhammad is the Prophet of God] thus implies by its sound the power, generosity and serenity of reposing in the Truth characteristic of the Prophet. This repose in the Truth is not based on a flight from the world but on a penetration into it in order to integrate and organize it. The spiritual castle in Islam is based on the firm foundations of harmony within human society and in individual human life.
Source: Ideals and Realities of Islam by Seyyed Hossein Nasr