How do Islamic scholars formulate the infallibility of the Quran — is it in all details, or in the main religious content, or in preservation from intentional corruption?

This question brings us to the heart of one of the most complex discussions in Quranic sciences and Islamic theology (kalām): what are the limits of Quranic infallibility? The question is complex because "infallibility" (ʿiṣma) itself is a multi-layered concept, and Islamic scholars across the centuries have formulated varied positions — from absolute infallibility in every letter and detail, to infallibility in religious content without historical or scientific details, to infallibility in the sense of preservation from intentional corruption only. Understanding this diversity is necessary for evaluating the Islamic position on sacred text.

Inadequate responses to be avoided

From some traditional defenders:

"There is absolute consensus on the infallibility of the Quran in everything." This is a misleading oversimplification. It is true that there is consensus on "preserving the Quran from corruption" in a general sense, but the details of infallibility and its limits were and remain a subject of discussion among scholars. Al-Fakhr al-Rāzī in his commentary, Ibn Khaldūn in his Muqaddima, and al-Shāṭibī in al-Muwāfaqāt all discussed precise details about the nature and limits of infallibility.

"Whoever doubts the absolute infallibility of the Quran is outside Islam." A hasty judgment. Many respected scholars discussed precise issues: does infallibility include variant readings (qirāʾāt shādhdha)? Does it include the arrangement of chapters? Does it include the names of chapters? Does it include minor historical details? Academic discussion about the limits of infallibility does not mean doubting the origin of revelation.

From some secular critics:

"The existence of different readings negates the claim of infallibility." A hasty conclusion. Scholars of readings from earlier and later generations developed a complex theory about mutawātir and shādhh readings, and their relationship to revelation and infallibility. Differences in mutawātir readings are not considered by them as negating infallibility, but rather part of the richness of the revealed text.

"The abrogating and abrogated (al-nāsikh wa-l-mansūkh) contradicts infallibility." A misunderstanding of the Islamic concept. Abrogation (naskh) in Islamic principles is not "error and correction," but rather a gradual progression in legislation intended from the beginning. Infallibility does not mean absolute fixity of rulings, but rather the correctness of each ruling in its designated time.

Why these responses are inadequate

Responses from both sides share excessive oversimplification: they treat "infallibility" as a single simple concept, while the Islamic tradition developed multiple and sophisticated conceptions of infallibility that differ in scope and application.

Three main models of infallibility in Islamic tradition

First model: Comprehensive absolute infallibility

This position is most common in popular discourse and is adopted by many classical commentators. Infallibility here includes:
- Every word and letter in the Quran
- Both meaning and wording
- Historical, scientific, and geographical details
- Arrangement and organization

Example: The position of al-Zarkashī in "al-Burhān fī ʿulūm al-Qurʾān" where he sees that everything in the Quran — even the repetition of stories and arrangement of verses — has precise divine wisdom. Also the position of al-Suyūṭī in "al-Itqān" who defends infallibility in the most precise details.

Strength: Maintains complete sanctity of the text and reassures the ordinary believer.

Challenge: Faces difficulties when dealing with differences in ancient manuscripts, different readings, and issues that appear historical or scientific and from which meanings contrary to contemporary knowledge may be understood.

Second model: Infallibility in essential religious content

A more precise position adopted by some later scholars, especially when facing modern challenges. Infallibility here focuses on:
- Basic beliefs and legal rulings
- Spiritual and moral guidance
- The major objectives (maqāṣid) of Islamic law

As for historical details or references to natural phenomena, they are viewed in their historical and rhetorical context, not as precise scientific information.

Example: The position of Muhammad ʿAbduh in his commentary on "Juzʾ ʿAmm" and Tafsīr al-Manār, where he distinguished between fixed religious truths and rhetorical expressions connected to context. Also the position of Amīn al-Khūlī and the literary interpretation school that focuses on religious meaning without committing to the literalness of every historical or cosmic detail.

Strength: Resolves many problems related to historical or scientific details while preserving the essence of the religious message.

Challenge: Difficulty in drawing the dividing line between "religious content" and "non-religious details." Who determines what is essential and what is secondary?

Third model: Infallibility as preservation from intentional corruption

This is the narrowest definition of infallibility, focusing on:
- Preserving the text from intentional manipulation
- Ensuring the basic message reaches without deliberate distortion
- Maintaining the chain of transmission and text in a reliable manner

This position does not deny the possibility of human error in copying or differences in readings, as long as the basic message is preserved.

Example: Some contemporary scholars like Muhammad Muṣṭafā al-Aʿẓamī in his studies on the history of the Quranic text, where he focuses on proving precise historical preservation of the text without entering into theological discussions about the nature of infallibility.

Strength: A historically and academically defensible position that is compatible with modern critical methods.

Challenge: May be seen as a concession from the traditional concept of infallibility and does not satisfy those seeking absolute certainty.

Factors influencing the diversity of positions

First, historical context: Early scholars did not face the same challenges that later scholars faced (such as scientific discoveries or ancient manuscripts).

Second, theological methodology: Ashʿarites, Māturīdites, and Ḥanbalites have different approaches to the relationship between reason and revelation, and this affects their conception of infallibility.

Third, contemporary challenges: The discovery of the Sanaa manuscripts, comparative studies of religious texts, and historical criticism are all factors that pushed some scholars to reformulate the concept of infallibility.

Where the discussion stands today

The discussion is alive and ongoing. In Islamic academic circles, there are attempts to develop a more precise concept of infallibility that maintains sanctity while responding to contemporary challenges. Concepts such as "functional infallibility" (infallibility in performing the guidance function) or "purposive infallibility" (infallibility in achieving the objectives of Islamic law) are discussed as potential alternatives.

The position that is consistent with the method of rational preponderance (rajḥān ʿaqlī) is recognizing the multiplicity of legitimate scholarly efforts in understanding infallibility, while emphasizing that all of them share belief in the origin of revelation and the truthfulness of the message. Disagreement on details should not obscure agreement on the foundation.

For advanced reading

- Advanced level: The theory of readings and its relationship to infallibility according to Ibn al-Jazarī and those after him
- Advanced level: The Sanaa manuscripts and the debate about the history of the Quranic text
- Al-Zarkashī, al-Burhān fī ʿulūm al-Qurʾān
- Muhammad ʿAbduh, Tafsīr Juzʾ ʿAmm
- Muhammad Muṣṭafā al-Aʿẓamī, Tārīkh al-naṣṣ al-Qurʾānī