Never, even one moment in sleep or when awakened they are not defeated by natural wills and materialistic fancies in status of difficulty and insolvency. It glows like sun inside the heart and discards all the dark and black points out of the gaps and angles. 

This type of science is not only not defeated by common sense and subdued by the flood of sensitivity, but covers all the powers and sensitivities and employs them for his benefits and commissions them upon his command. They lack power of violation and aggression.

Therefore, this power of science and bright light shall continuously protect its owner from sin and error.

As narrated, there is a soul around the prophets and Imams named holy spirit which protects them in their high rank of humanity and keeps them of all sin and mistake and deviation.

The reasoning for purity of prophets and Imams are provided by two verses of Holy Koran:

“And those who obey God and His Prophets shall be grouped by those who have been granted by God as the prophets and martyrs and the faithful and shall be very close friends”.

“Almighty God! Guide us to the correct path! The path of those You granted, not the path of those You raged and were aberrant. (Fateheh Sura, verse: 6 & 7)

The first verse means that God granted prophets, martyrs, and pious men and the second verse means those who are granted by God shall not astray.

Thus, the prophets and martyrs and pious men shall not deprave and since every sin or guilt serves as deviance, thus they make no mistake, no sin.

It means that their ranks are so that they enjoy queens of memory that keeps them from sin and guilt and this is the meaning of purity and innocence and since making a mistake in interpretation of decrees and divine inspiration and culture of all the divine instructions and recognition of the details and making a mistake in propagation serve as perversion, thus, they shall not make any mistake at this stage and relying on this statement, their innocence will be considered at two stages of divine inspiration and culture and the stage of propagation and advertisement.

Amir Almomenin Ali (peace be upon him) enjoys the rank of innocence. Amir Almomenin (peace be upon him) held the rank of innocence. He was executor, heir, and caliph of prophet of God and was the first man who was faithful to Almighty God and prayed with him.

Tabari narrates from Zeyd ibn Argham:

“The first person who converted to prophet of Allah was Ali ibn Abitaleb.” 

Imamate of Amir Almomenin (peace be upon him) was from the first day in accordance with monotheism and prophecy of Mohammad Rasoul Allah (peace be upon him). <

It can be said by certainty that Imamate of Amir Almomenin (p.b.u.h.) was connected with testimony of “There is no God but Allah and Mohammad is prophet of God and Ali is Imam of God”.

Since, in the first day when prophet guided the people to Islam and ordered them to acknowledge and to state the testimonies; in the same day and in the same session he commanded them to obey and to follow Amir Almomenin (p.b.u.h.) and announced his Imamate.  

Invitation of the people by prophet (p.b.u.h.) was upon command of God as stated in the verse: “Oh! Prophet, let’s your closer relatives fear agony of God and put down the wings of your graces for those faithful men who follow you. So, if they disagree, tell them that you hate them and rely on Almighty benevolent God. God who witnesses you when you stand to pray and is aware of your states when you prostrate.  Only God will hear and will see you."

Prophet invited his relatives and friends and announced to them his prophecy according to the narration which is well-known to narration of “Ashireh” the historians and to the great narrators of Islam.

Thus, since the time, Islam emerged it was accompanied by three sentences:

Acknowledgement to God, to His Prophet, to His Imam (Ali Vali Allah) which is known as Shiite, and necessitates following Amir Almomenin (p.b.u.h.), as one of the definite issues of Islam and reality of Shiite, is the reality of Islam and the people who suffice statement of testimonies and have acknowledged imamate and prophecy of Amir Almonin, have rejected part of Islam and in fact have rejected Islam.

Furthermore, those who acknowledge monotheism, but not prophecy of Mohammad (p.b.u.h.), acknowledge part of reality and deny part of reality and in fact deny the truth.

Shiite and following relatives of prophet and Imams was founded in the first day of Islam and based on the same fact the stipulated verses of Holy Koran and words of prophet were gradually added to monotheism and prophecy.

Additionally, narration of Ashireh is used and Amir Almomenin (p.b.u.h.) tolerated difficulties and had to take the great burden of propagation and delivery of the decrees and taking Jihad and at last taking it to the people of the world. Since, the narration does not mean that whoever is faithful will be my caliph, my executor, but it means that whoever assists me in this work and whoever strengthens me and whoever is my friend, he will be my caliph.

The sentences they narrate are as follows: Whom of you does help me in this case? Whom of you allegiance, I mean who is a servile? Who sells himself? Who leaves his powers and who is in all the stages of prophecy and in tolerating the difficulties and in the risky duty of mission and in encountering with thousands of problems my brother, my friend, my companion and my heir, so that after me the same responsibility is only on his shoulders and he stands lonely against the world of heresy, he notifies my mission and fulfills his duty.

Whom of you accepts to be my brother, my minister, my caliph, my executor in my nation and authority of every faithful man after me. Such sentences stipulate: whom of you will not remain me alone in such a status, who rise to save religion of God and takes in his shoulders such a load when I live and when I die, and who will company me when I am alive and fulfills my duties after my death and performs my debt to God.

Thus, by accepting such case, Amir Almomenin (p.b.u.h.) was a partner of prophet of God in all the stages of his mission and in taking the people to the stage of prosperity.