How Do Muslims Decide Which Parts of the Bible Are Corrupted and Which Aren't?

Not applicable. The question concerns an Islamic theological doctrine (tahrif) about the integrity of the Bible as evaluated from outside that canon; Judaism has no parallel framework for adjudicating which portions of the Hebrew Bible are corrupted by external religious criteria.

Not applicable. Christianity does not employ an external doctrinal lens to classify portions of its own scripture as corrupted versus authentic in the way the Islamic tahrif framework does. Paul's letter to the Corinthians actually addresses the opposite concern — that ministers might corrupt God's word through deceptive handling — but this is an internal pastoral warning, not a systematic method for excising passages 2 Corinthians 2:17.

This is fundamentally an Islamic question, and the honest answer is: there is no single, universally agreed-upon Muslim methodology for identifying which specific Bible verses are corrupted and which are not. The doctrine of tahrif — scriptural falsification — is grounded in several Qur'anic passages that accuse portions of the People of the Book of distorting their scriptures Quran 3:78Quran 4:44.

The Qur'an's accusation is pointed but not exhaustively specific. Surah 3:78 describes a party who 'distort the Scripture with their tongues, that ye may think that what they say is from the Scripture, when it is not from the Scripture' Quran 3:78. Surah 4:44 warns Muslims that some who received scripture 'purchase error' and seek to lead Muslims astray Quran 4:44. Ibn Abbas, the famous companion of the Prophet, interpreted this to mean the People of the Scripture 'believed in some portions of it and disbelieved the others' Sahih al Bukhari 3945 — a selective, rather than wholesale, corruption.

Classical Muslim scholars actually divided into two broad camps on what kind

• Tahrif al-lafz (textual corruption): The actual words of the Torah and Gospel were changed. This view, associated with scholars like Ibn Hazm (d. 1064 CE), holds that the physical text was altered and therefore most of the Bible cannot be trusted.
• Tahrif al-ma'na (interpretive corruption): The words were largely preserved but their meaning was distorted through misinterpretation. Many medieval scholars, including Ibn Taymiyya (d. 1328 CE), leaned toward this view, arguing the text itself wasn't entirely fabricated.

In practice, Muslim scholars have used several overlapping — and sometimes contradictory — criteria to evaluate individual Bible passages:

1. Agreement with the Qur'an: If a biblical passage aligns with Qur'anic teaching (e.g., monotheism, prophethood of Jesus as a human messenger), it's often accepted as a remnant of the original revelation. If it contradicts the Qur'an (e.g., the Trinity, crucifixion as salvific), it's classified as corrupted or misinterpreted.
2. Prophetic references: Muslim scholars have historically mined the Bible for passages they believe predict Muhammad — such as Deuteronomy 18:15 or John 14:16 (the Paraclete). These are treated as authentic survivals. This approach was used extensively by Ahmed Deedat (20th century) and continues in popular Muslim apologetics.
3. Internal biblical criticism: Some contemporary Muslim scholars, like Ismail al-Faruqi (d. 1986), have actually drawn on Western historical-critical scholarship to argue that the documentary hypothesis, redaction criticism, and textual variants confirm Muslim suspicions of corruption — though this is a modern apologetic move, not a classical one.
4. Hadith guidance: The Prophet reportedly advised Muslims neither to believe nor disbelieve reports from the People of the Book, but to say 'We believe in what was revealed to us and what was revealed to you' — a stance of cautious neutrality rather than wholesale rejection.

The disagreement among Muslim scholars is real and significant. Fazlur Rahman (d. 1988) and other modernist Muslim thinkers argued that the Qur'an's corruption charges were narrower and more contextual than classical interpreters admitted. Meanwhile, conservative scholars maintain that the current Bible is so thoroughly altered that only Qur'anic confirmation can rescue any passage. There's no Muslim magisterium that has settled this question definitively.

Not applicable. Concerns Islamic scripture/practice; no direct counterpart.

Not applicable. Concerns Islamic scripture/practice; no direct counterpart.

Muslim evaluation begins with the Qur’an’s claim that some among the People of the Book distorted scripture in presentation, making listeners think their words were divine when they weren’t Quran 3:78. This establishes a cautionary principle: accept what aligns with the Qur’an, reject what the Qur’an corrects, and suspend judgment when the Qur’an is silent Quran 3:78Quran 4:44.

The Qur’an also notes that certain recipients of earlier scripture led others astray, reinforcing the need to test claims against Qur’anic guidance rather than assuming unqualified preservation in all details Quran 4:44. Early reports further describe a pattern of selective acceptance and rejection among the People of the Book, which Muslims cite as historical context for why later transmission may include both truth and error Sahih al Bukhari 3945.

In practice, then, Muslims don’t produce a fixed list of intact verses; instead, they use the Qur’an as the criterion (furqān) to discern what to confirm, correct, or bracket, given its warnings about distortion by some and misguidance introduced over time Quran 3:78Quran 4:44Sahih al Bukhari 3945. Scholars differ on particulars, but the shared anchor is the Qur’an’s critique of distortion and its role in adjudicating disputed reports Quran 3:78Quran 4:44.