Introduction

Imam Ali ibn Abi Talib (AS) is the most prominent central figure in the history of Islam after the Messenger of Allah (PBUH). The Islamic nation agrees upon his great station and his lofty worth; he is the foremost warrior, the most knowledgeable of the nation, the legatee of the Messenger, and his very self by the text of the Book.

The evidentiary reasoning in this study sets out from a correlated rational and transmitted rule: “the ugliness of giving precedence to the inferior over the superior.” For the imamate is a divine leadership and an extension of the functions of prophethood in managing the nation and preserving the Sharia, and reason decisively judges that the holder of this office must be the greatest of the nation in perfection, the most knowledgeable in judgment, and the purest in essence — which is infallibility and divine protection from error.

This study aims to fuse the texts, verses, and narrations found in the shared Islamic heritage, with direct documentation of the sources step by step, reinforced by the doctrinal and exegetical inferences of the great scholars and researchers, such as al-Shaykh al-Mufid (336–413 AH / 948–1022 CE), al-Shaykh al-Tusi (385–460 AH / 995–1067 CE), and Allamah al-Tabataba’i (1321–1402 AH / 1904–1981 CE), to clarify how these virtues and merits inevitably lead to the establishment of preeminence, infallibility, and divine appointment to the imamate.

---

1. The Quranic Verses Revealed Concerning the Virtue of Imam Ali (AS) and Their Successional Import

Firm verses were revealed concerning Imam Ali (AS), each representing a structural cornerstone in establishing his purity and the rightfulness of his leadership station.

1. The Verse of Guardianship

“Your guardian is only Allah, His Messenger, and those who believe — those who establish prayer and give charity while bowing.” (Al-Ma’ida: 55)

The narration and source: This verse was revealed when a beggar entered the mosque while the Prophet and the Muslims were praying, and no one gave him anything; Imam Ali (AS) was bowing, and he gestured with his little finger, so the beggar took the ring and left, whereupon Gabriel descended with the verse.

• al-Wahidi (d. 468 AH / 1076 CE), Asbab Nuzul al-Quran, p. 203.
• al-Tabari (224–310 AH / 839–923 CE), Jami al-Bayan fi Ta’wil Ay al-Quran, vol. 6, p. 389.
• al-Suyuti (849–911 AH / 1445–1505 CE), al-Durr al-Manthur fi al-Tafsir bi al-Ma’thur, vol. 3, p. 104.
• al-Shaykh al-Tusi (385–460 AH / 995–1067 CE), al-Tibyan fi Tafsir al-Quran, vol. 3, p. 558.

The inference and interpretation of the scholars of the nation: al-Shaykh al-Tusi holds in his exegesis that the verse is an explicit and decisive text on the imamate of Imam Ali (AS). The point of inference lies in two matters:

• The use of the restricting particle “only” (innama), which confines guardianship to Allah, His Messenger, and Imam Ali (AS), who gave the ring in charity while bowing, by consensus.
• The word “your guardian” (waliyyukum) came in the singular form, attributed to the three parties together; and the guardianship established for Allah and His Messenger is the guardianship of authority, management, and absolute governance. Since the verbal context is one, the guardianship conferred upon Imam Ali (AS) is the same prophetic guardianship in the obligation of obedience and in political and spiritual leadership.

2. The Verse of Purification

“Allah only wishes to remove all impurity from you, O People of the House, and to purify you a thorough purification.” (Al-Ahzab: 33)

The narration and source: From A’isha (9 BH–58 AH / 613–678 CE): that the Prophet (PBUH) went out wearing a cloak of black hair; al-Hasan ibn Ali (AS) came and he brought him in, then al-Husayn (AS) came and he brought him in, then Fatima (AS) came and he brought her in, then Ali (AS) came and he brought him in, then he said:

“Allah only wishes to remove all impurity from you, O People of the House, and to purify you a thorough purification.”

• Muslim ibn al-Hajjaj (204–261 AH / 820–875 CE), Sahih Muslim, Book of the Virtues of the Companions, Chapter on the Virtues of the People of the Prophet’s House, no. 2424.
• al-Tirmidhi (209–279 AH / 824–892 CE), Sunan al-Tirmidhi, Book of Virtues, Chapter on the Virtue of Fatima daughter of Muhammad (AS), no. 3787.
• Allamah al-Tabataba’i, al-Mizan fi Tafsir al-Quran, vol. 16, p. 311.

The inference and interpretation of the scholars of the nation: Allamah al-Tabataba’i clarifies in al-Mizan that the will in the verse is not a legislative will, because the obligation of purity is directed at all Muslims and is not specific to the the Prophet's household (AS); rather it is an existential will particular to them, inseparable from the intended object. And since “impurity” (rijs) encompasses every sin, error, or inner and outer defilement, its complete removal and the confinement of the purification to them entails the establishment of absolute infallibility. The Imam whose obedience is obligatory must be infallible in order to preserve the Sharia from distortion and to govern the nation by the truth without slip.

3. The Verse of Mutual Imprecation (Mubahala)

“So whoever argues with you about it after the knowledge has come to you, say: Come, let us call our sons and your sons, our women and your women, our selves and your selves; then let us earnestly pray and invoke the curse of Allah upon the liars.” (Al Imran: 61)

The narration and source: When this verse was revealed, the Messenger of Allah (PBUH) called Ali (AS), Fatima (AS), al-Hasan (AS), and al-Husayn (AS), and said:

“O Allah, these are my family.”

And he went out with them for the mutual imprecation with the Christians of Najran, to the exclusion of the rest of the nation.

• Muslim, Sahih Muslim, Book of the Virtues of the Companions, Chapter on the Virtues of Ali ibn Abi Talib (AS), no. 2404.
• al-Tirmidhi, Sunan al-Tirmidhi, Book of Virtues, Chapter on the Merits of Ali ibn Abi Talib (AS), no. 3724.
• Allamah al-Tabataba’i, al-Mizan fi Tafsir al-Quran, vol. 3, p. 224.

The inference and interpretation of the scholars of the nation: al-Shaykh al-Mufid infers that the making of Imam Ali (AS) the instance of the word “our selves” is the loftiest virtue ever attained by a human; for it is rationally impossible for the selves to be physically united, so what is intended is equality and likeness in all perfections, virtues, infallibility, and general guardianship. And since the Prophet (PBUH) is the most excellent of creation absolutely, the one who is his very self by the text of the Book is the most excellent of the entire nation after the Messenger, and giving precedence to another over him in the station of the caliphate is an affront to reason and evidence.

4. The Verse of Conveyance and the Completion of the Religion

“O Messenger, convey what has been sent down to you from your Lord; and if you do not, then you have not conveyed His message.” (Al-Ma’ida: 67)

“Today I have perfected for you your religion, completed My favor upon you, and approved for you Islam as a religion.” (Al-Ma’ida: 3)

The narration and source: The Verse of Conveyance was revealed at Ghadir Khumm, commanding the Prophet (PBUH) to convey the guardianship of Ali ibn Abi Talib (AS) to the people; and following the proclamation of the guardianship and the taking of the pledge, the verse of the perfection of the religion and the completion of the favor was revealed.

• al-Shaykh al-Kulayni (c. 255–329 AH / c. 864–941 CE), al-Kafi, vol. 1, p. 290.
• Ali ibn Ibrahim al-Qummi (d. after 307 AH / after 919 CE), Tafsir al-Qummi, vol. 2, p. 103.

The inference and interpretation of the scholars of the nation: The researchers point to the organic constitutional correlation between the two verses; for the stern tone of the Verse of Conveyance stakes the efforts of the message over twenty-three years upon the conveyance of this decisive matter:

“And if you do not, then you have not conveyed His message.”

And with the revelation of the verse of perfection immediately upon the pledge, it is rationally demonstrated that the imamate is the ceiling of the message and the attainment of its perfection, and that the religion is not perfected and the favor is not completed except by the conferral of guardianship upon Imam Ali (AS).

5. The Verse of “Hal Ata” (the Feeding)

“And they give food, despite their love for it, to the needy, the orphan, and the captive: We feed you only for the sake of Allah; we desire from you neither reward nor thanks.” (Al-Insan: 8-9)

The narration and source: The exegetes agreed that these verses were revealed concerning Ali (AS), Fatima (AS), al-Hasan (AS), and al-Husayn (AS) when they made a vow of fasting and gave away their sustenance for three consecutive days to the needy, the orphan, and the captive, preferring others over themselves.

• al-Zamakhshari (467–538 AH / 1075–1144 CE), al-Kashshaf, vol. 4, p. 670.
• al-Shaykh al-Tusi, al-Tibyan fi Tafsir al-Quran, vol. 10, p. 211.

6. Other Foundational Verses of Virtues and Distinctions

• The Verse of Affection for Kin:

“Say: I ask of you no reward for it except affection for kin.” (Al-Shura: 23)

Found in Sahih al-Bukhari, Book of Exegesis, no. 4804, and in al-Kafi, vol. 1, p. 187. The inference is that Allah made the reward of the message the love of Ali (AS) and his family (AS), and the reward equivalent to the greatness of the message can only be for a party that guarantees the salvation of the nation by following it and by its imamate.

• The Verse of the Truthful:

“O you who have believed, be mindful of Allah and be with the truthful.” (Al-Tawba: 119)

Found in al-Tibyan of al-Shaykh al-Tusi, vol. 6, p. 298. The inference is that Allah commands being with and absolutely accompanying the truthful, and Imam Ali (AS) is the head of the infallible truthful ones after the Messenger of Allah (PBUH).

• The Verse of Those in Authority:

“Obey Allah and obey the Messenger and those in authority among you.” (Al-Nisa: 59)

Found in al-Kafi, vol. 1, p. 290. The inference is that Allah joined obedience to those in authority with obedience to Him and to His Messenger without restriction or condition, which entails their infallibility, and at their head is Imam Ali (AS).

• The Verse of Light:

“Allah is the Light of the heavens and the earth. The likeness of His light is as a niche in which is a lamp.” (Al-Nur: 35)

Found in Tafsir al-Qummi, vol. 2, p. 103. The inference is that the lamp symbolizes the light of knowledge and guidance embodied in Imam Ali (AS) and the Imams (AS) of his infallible progeny.

---

2. The Prophetic Hadiths on the Imamate of Imam Ali (AS) and His Virtue

The noble prophetic narrations were mass-transmitted to clarify the political and spiritual dimensions latent in the person of Imam Ali (AS).

1. The Hadith of Ghadir

“O people, am I not more entitled to you than your own selves?”

They said: Yes, O Messenger of Allah.

“Then whoever’s master (mawla) I am, Ali is his master. O Allah, befriend whoever befriends him and be an enemy to whoever is his enemy; support whoever supports him and forsake whoever forsakes him.”

The narration and source: The Prophet (PBUH) delivered it in the gathering of the Farewell Pilgrimage at Ghadir Khumm, after the revelation of the Verse of Conveyance and the taking of the pledge from all the Muslims.

• al-Tirmidhi, Sunan al-Tirmidhi, Book of Virtues, Chapter on the Merits of Ali ibn Abi Talib (AS), no. 3713.
• Ibn Kathir (701–774 AH / 1301–1373 CE), al-Bidaya wa al-Nihaya, vol. 5, p. 227.
• al-Kulayni, al-Kafi, vol. 1, p. 292.

The inference and interpretation of the scholars of the nation: al-Shaykh al-Mufid, in Awa’il al-Maqalat, dismantles the objections that try to confine the word “mawla” to the loving friend or the supporter, and advances his proofs rationally:

• The Prophet (PBUH) joined the guardianship of Imam Ali (AS) to his own priority over the selves:

“Am I not more entitled to you than your own selves?”

And priority over the self is absolute governance and general guardianship.

• The coming of the immediate, eloquent “fa” (then):

“Then whoever’s master I am.”

requires the transfer of the very meaning of priority and governance mentioned at the beginning of the speech to Imam Ali (AS).

• The temporal and spatial circumstance — that is, the gathering of hundreds of thousands in the heat of the noonday — cannot rationally be intended merely to clarify affection; it is an official constitutional proclamation of appointment and succession.

2. The Hadith of Rank

“You are to me as Aaron was to Moses, except that there is no prophet after me.”

The narration and source: The Prophet (PBUH) said it to Imam Ali (AS) when he appointed him over Medina during the Expedition of Tabuk.

• al-Bukhari (194–256 AH / 810–870 CE), Sahih al-Bukhari, Book of the Virtues of the Companions, Chapter on the Merits of Ali (AS), no. 3706.
• Muslim, Sahih Muslim, Book of the Virtues of the Companions, no. 2404.

The inference and interpretation of the scholars of the nation: The scholars of doctrine clarify that the hadith established for Imam Ali (AS) all the ranks of Aaron in relation to Moses mentioned in the Quran — such as the ministry, the strengthening of support, partnership in the affair, and general succession in absence — and excluded from them only “prophethood,” on account of the cutting off of revelation. The exception by wording is a decisive proof of the persistence of all the managerial, political, and imamate-related authorities for Ali (AS) after the absence of the Messenger (PBUH).

3. The Hadith of the Two Weighty Things

“I am leaving among you the two weighty things: the Book of Allah and my progeny, my Household. As long as you cling to them both, you will never go astray after me. And they shall not part until they return to me at the Pool.”

The narration and source: The Prophet (PBUH) delivered it on multiple occasions in affirmation of the infallible authority after him.

• al-Tirmidhi, Sunan al-Tirmidhi, Book of Virtues, Chapter on the Merits of the People of the Prophet’s House, no. 3788.
• al-Hakim al-Naysaburi (321–405 AH / 933–1014 CE), al-Mustadrak ala al-Sahihayn, vol. 3, p. 124.
• al-Kulayni, al-Kafi, vol. 1, p. 294.

The inference and interpretation of the scholars of the nation: al-Shaykh al-Mufid infers in his writings that this hadith establishes two inseparable matters:

• Infallibility: the pairing of the progeny with the Quran in a single sentence and the complete affirmation that they “shall not part” indicates the infallibility of Ali (AS) and his family (AS); for the Quran is infallible from falsehood, and whoever is paired with it and does not part from it in matters small or great must be infallible like it — otherwise separation and misguidance would occur upon the issuance of any error.
• The obligation of following and the imamate: making salvation from misguidance confined to clinging to the Quran and the progeny together means imposing obedience to Imam Ali (AS) and his imamate exactly as obedience to the Book is imposed.

4. The Hadith of the City of Knowledge

“I am the city of knowledge and Ali is its gate; so whoever seeks knowledge, let him come to the gate.”

The narration and source: The Prophet (PBUH) said it, clarifying the absolute intellectual and jurisprudential authority for the nation.

• al-Hakim al-Naysaburi, al-Mustadrak ala al-Sahihayn, vol. 3, p. 126.
• al-Dhahabi (673–748 AH / 1274–1348 CE), Siyar A’lam al-Nubala’, vol. 2, p. 378.

The inference and interpretation: Reason judges that the caliph and Imam after the Prophet (PBUH) must be the most knowledgeable in order to repel the objections and to judge by the ruling of Allah. The confinement of the prophetic knowledge to Imam Ali (AS) establishes his absolute scholarly preeminence, and giving precedence to the less knowledgeable over the most knowledgeable is an ugliness impossible in the divine wisdom.

5. The Hadiths of Distinctions and Absolute Centrality

• The Hadith of Truth:

“Ali is with the truth and the truth is with Ali; it revolves wherever he revolves.”

Found in al-Mustadrak ala al-Sahihayn of al-Hakim al-Naysaburi, vol. 3, p. 124. The inference is that it indicates essential inseparability and infallibility, for the truth revolves in the orbit of Imam Ali (AS) in word and deed.

• The Hadith of the Measure of Faith:

“None loves you but a believer, and none hates you but a hypocrite.”

Found in Sahih Muslim, Book of Faith, Chapter clarifying that faith is by the heart and the tongue, no. 78, and in the commentary of al-Nawawi (631–676 AH / 1233–1277 CE) on Sahih Muslim, vol. 2, p. 54.

• The Hadith of the Banner on the Day of Khaybar:

“Tomorrow I will surely give the banner to a man who loves Allah and His Messenger and whom Allah and His Messenger love, an attacker who never flees; Allah will grant victory at his hands.”

Found in Sahih al-Bukhari, Book of the Virtues of the Companions, no. 3706.

---

3. The Composite Evidentiary Structure

The merits integrate into an interlocking logical system that leads necessarily to establishing the station of the divine imamate for the friend of Allah, Ali ibn Abi Talib (AS):

Absolute preeminence → infallibility → appointment and imamate.

The First Pillar: The Proofs of Absolute Preeminence over the Companions

In knowledge and judgment: The Companions unanimously acknowledged their incapacity and their recourse to Imam Ali (AS) in complex calamities. Words such as the famous saying of Umar ibn al-Khattab (40 BH–23 AH / 584–644 CE) are mass-transmitted in the annals of history:

“Were it not for Ali, Umar would have perished.”

And his saying:

“I seek refuge in Allah from a difficulty for which there is no Abu Hasan.”

It is never reported that Ali (AS) inquired of a Companion or said “I do not know”; rather he was the recourse of all, and the most knowledgeable is the most entitled to the imamate, rationally.

• Ibn Hajar al-Asqalani (773–852 AH / 1372–1449 CE), Fath al-Bari Sharh Sahih al-Bukhari, vol. 7, p. 498.

Precedence and cosmic struggle: He is the first to embrace Islam and to pray, and he never prostrated to an idol, and so he was distinguished with the phrase “may Allah ennoble his face,” while others spent a portion of their lives in polytheism. In struggle, he was the unique champion of Islam; he killed half of the polytheists of Badr, stood firm on the day of Uhud and Hunayn when everyone turned their backs, and killed Amr ibn Wudd al-Amiri on the day of the Trench, concerning which the Prophet (PBUH) said:

“The strike of Ali on the day of the Trench is equal to the worship of the two species (humans and jinn).”

• Ibn al-Athir (555–630 AH / 1160–1233 CE), al-Kamil fi al-Tarikh, vol. 1, p. 586.
• Ibn Hisham (d. 218 AH / 833 CE), al-Sira al-Nabawiyya, vol. 2, p. 278.

The Second Pillar: The Rational Proof Inseparable from His Infallibility

Based on what was transmitted above from the Verse of Purification and the Hadith of the Two Weighty Things, reason leads us directly to the inevitability of his imamate through the demonstration of grace: the nation as a whole is not infallible, and the Companions are not infallible, by their own admission of falling into error. And since the Imam is the reference and leader of the nation, then were error or disobedience possible for him, he would command error, and then the nation would fall into a contradiction between the obligation of following the Imam and the prohibition of following error. And because Allah does not legislate contradiction, the Imam must be infallible. And since infallibility was established for Imam Ali (AS) and he alone possessed it, his imamate was determined and the imamate of the non-infallible was invalidated.

• al-Shaykh al-Mufid, Awa’il al-Maqalat, p. 40.

The Third Pillar: Divine Appointment, Text, and Testament

The imamate is a divine office not subject to the whims of consultation or deficient human choice; it is by a conferral from Allah, blessed and exalted. The Prophet (PBUH) designated Imam Ali (AS) from the dawn of the message to its close.

The Hadith of the House (the Day of Warning): upon the revelation of His saying, exalted is He:

“And warn your nearest kin.”

the Prophet (PBUH) gathered them and said, while holding the neck of Imam Ali (AS):

“This is my brother, my legatee, and my successor among you, so listen to him and obey.”

• Ibn Kathir, al-Bidaya wa al-Nihaya, vol. 5, p. 227.

The witnessed event of Ghadir: the official, general, and final coronation by a decisive divine command, that Imam Ali (AS) be the Imam of the Muslims and the Commander of the Faithful.

---

Conclusion

It becomes clear from this comprehensive and precise survey that the virtues attributed to Imam Ali ibn Abi Talib (AS) in the firm verses and the mass-transmitted narrations of the Sunnah are not incidental merits or secondary praise; they are objective proofs of an interconnected structure.

Superior knowledge, precedence, and struggle establish absolute preeminence. The Verse of Purification, the Hadith of the Two Weighty Things, and the inseparability of the truth establish infallibility. The Verse of Guardianship, Ghadir, the Hadith of Rank, and the House establish the explicit divine appointment and text.

Accordingly, the rational and transmitted correlation establishes decisively that Imam Ali (AS) is the appointed Imam and the direct legitimate successor of the Messenger of Allah (PBUH), and that the notion of giving precedence to the inferior over the superior, or of giving precedence to the non-infallible over the infallible, is invalidated by reason and by the text, in whole and in detail.