Disputed Statements

Ibn Battuta, Historical Figures

Standing Scholarly debate

Concerns Lifespan or Floruit End Year

Currently States 1369

Sources for Ibn Battuta's death give either 1368 or 1369, and biographers do not treat the discrepancy as settled; 1369 is recorded here as the commonly cited later figure rather than a fixed date, unlike his 1304 birth in Tangier, which is not itself disputed.

Source Ibn Battuta (reference article), Wikipedia contributors tier 3

Ibn Kathir, Historical Figures

Standing Scholarly debate

Concerns Lifespan or Floruit Start Year

Currently States 1300

The source gives this year as about, its own approximate estimate rather than a fixed date.

Source Encyclopaedia of Islam (Brill), 2nd and 3rd editions, P. Bearman et al. (eds.) tier 1

Ibn Kathir, Historical Figures

Standing Scholarly debate

Concerns Lifespan or Floruit End Year

Currently States 1373

The source gives this year as about, its own approximate estimate rather than a fixed date.

Source Encyclopaedia of Islam (Brill), 2nd and 3rd editions, P. Bearman et al. (eds.) tier 1

Ibn Majah, Historical Figures

Standing Scholarly debate

Concerns Lifespan or Floruit Start Year

Currently States 824

The source gives this year as about, its own approximate estimate rather than a fixed date.

Source Encyclopaedia of Islam (Brill), 2nd and 3rd editions, P. Bearman et al. (eds.) tier 1

Ibn Majah, Historical Figures

Standing Scholarly debate

Concerns Lifespan or Floruit End Year

Currently States 887

The source gives this year as about, its own approximate estimate rather than a fixed date.

Source Encyclopaedia of Islam (Brill), 2nd and 3rd editions, P. Bearman et al. (eds.) tier 1

Ibn Tumart, Historical Figures

Standing Scholarly debate

Concerns Lifespan or Floruit Start Year

Currently States 1080

The source gives this year as about, its own approximate estimate rather than a fixed date.

Source The Encyclopaedia of Islam, 2nd edition, P. Bearman, Th. Bianquis, C. E. Bosworth, E. van Donzel and W. P. Heinrichs (eds.) tier 1

Ibn Tumart, Historical Figures

Standing Scholarly debate

Concerns Lifespan or Floruit End Year

Currently States 1130

The source gives this year as about, its own approximate estimate rather than a fixed date.

Source The Encyclopaedia of Islam, 2nd edition, P. Bearman, Th. Bianquis, C. E. Bosworth, E. van Donzel and W. P. Heinrichs (eds.) tier 1

Icon of Christ and Abbot Mena, Sacred Art & Iconography

Standing Scholarly debate

Concerns Date of Creation

Currently States 700 to 799 CE per the Louvre's own current official record; much popular literature, and Wikipedia's own summary text, instead date the panel to the second half of the sixth century and describe it as the oldest known Coptic icon, a claim the museum's present cataloguing does not support

Both figures are named in the entity description. This entry follows the Louvre's own current cataloguing as the more authoritative and current source rather than independently resolving which dating the wider scholarly literature now favors.

Source Musee du Louvre, "Le Christ et l'abbe Mena" collection record tier 1

Ifrit, Mythical Creatures

Standing Scholarly debate

Concerns Origin of the Name

Currently States Arabic philologists have traditionally connected ifrit to the root ayn-fa-ra, carrying senses of rebellion and strength, or, in a second reading of the same root, "to roll an opponent in the dust," a description of overpowering an enemy. The word does not appear in pre-Islamic poetry and occurs only once in the Quran, so neither reading can be checked against earlier usage. A separate proposal derives it instead from Middle Persian afridan, "to create," connecting it to an Avestan spirit-word and suggesting the term entered Arabic through Zoroastrian cultural contact rather than from a native Arabic root. No single derivation has settled the question.

Source Islam, Arabs, and the Intelligent World of the Jinn, Amira El-Zein tier 1

Igigi, Mythical Creatures

Standing Scholarly debate

Concerns Point in Dispute

Currently States Whether Anunna and Igigi named two fixed and separate classes of gods, or two overlapping terms whose senses shifted and in places exchanged places between periods

The usage is genuinely inconsistent across the record. Some readings treat the two as a stable pair of ranks, senior and junior; others hold that the terms overlap in the earlier material and only separate, and then invert, in the later. The Oracc Ancient Mesopotamian Gods and Goddesses entry adds that it is not entirely clear what distinguishes the two groups, that some gods appear to belong to both, and that the question is in need of a comprehensive new study.

Source Gods, Demons and Symbols of Ancient Mesopotamia: An Illustrated Dictionary, Jeremy Black and Anthony Green tier 2

Igigi, Mythical Creatures

Standing Scholarly debate

Concerns Who May Belong

Currently States How many gods the group held is not agreed: seven, eight and ten have each been argued, and Marduk is the one member the evidence places inside it with confidence

von Soden argued for seven, Kienast for eight, and Black and Green give ten, each on different evidence. Kienast also proposed Ishtar, Asarluhi, Ninurta, Nuska and Shamash among the members, and observed that some gods appear to belong to both the Igigi and the Anunnaki. Marduk is secure because the prologue to the Code of Hammurabi says the Anunnaki raised him high among the Igigi.

Source Ancient Mesopotamian Gods and Goddesses, Nicole Brisch (ed.) tier 1

Igigi, Mythical Creatures

Standing Scholarly debate

Concerns Origin of the Name

Currently States Where the name itself came from is not settled: Old Akkadian, Amorite and Arabic origins have each been proposed

Kienast argued for an Old Akkadian origin, von Soden for Amorite, and von Soden later for a possible Arabic connection. The Oracc Ancient Mesopotamian Gods and Goddesses entry sets the three proposals side by side and calls the etymology unclear.

Source Ancient Mesopotamian Gods and Goddesses, Nicole Brisch (ed.) tier 1

Ijma (Scholarly Consensus), Doctrines

Standing Scholarly debate

Concerns Point in Dispute

Currently States Whose agreement binds. Jafari jurisprudence accepts consensus only where it discloses the position of the infallible Imam, which makes its authority derivative rather than independent, and Quranist argument rejects it outright on the ground that the Quran nowhere makes the agreement of scholars binding.

Source Principles of Islamic Jurisprudence, Mohammad Hashim Kamali tier 1

Ijma: The Consensus of the Scholars Is Binding, Beliefs & Restrictions

Standing Scholarly debate

Concerns Point in Dispute

Currently States What counts as consensus: whether it must be the agreement of a single generation, whether the agreement of the Companions is decisive, and whether a consensus once formed can ever be reopened.

Ijma, the consensus of qualified scholars, is the third of the four sources of law recognised across the Sunni schools, holding that once qualified scholars have agreed on a ruling, that agreement is binding and no longer open to challenge; the Jafari school accepts a form of it but reads its authority as resting on the presence of the hidden Imam among those in agreement rather than on the scholars' agreement alone. Kamali's standard textbook on Islamic legal theory records three specific questions the Sunni schools dispute about what counts as valid consensus: whether it must be the agreement of a single generation rather than accumulating across generations, whether the agreement of the Prophet's companions specifically is decisive in a way later consensus is not, and whether a consensus once formed can ever be reopened by a later generation. These questions matter because how consensus is defined determines how much of settled Islamic law could in principle still be revisited, which is why schools with different views of what counts as consensus have not converged: the disagreement is over the mechanism's own scope rather than over any single ruling reached through it.

Source Principles of Islamic Jurisprudence, Mohammad Hashim Kamali tier 1

Ijtihad and taqlid, Doctrines

Standing Scholarly debate

Concerns Origin Period

Currently States Hallaq argues it never closed

Wael B. Hallaq's article Was the Gate of Ijtihad Closed?, International Journal of Middle East Studies 16:1, 1984, challenges the widely repeated claim that independent legal reasoning ceased in Sunni jurisprudence around the tenth century CE. Hallaq's method is close textual analysis of biographical dictionaries and juristic writings from the very period the closure is supposed to have occurred, searching for jurists who explicitly claimed, or were recognised by peers as holding, the status of mujtahid, one qualified to exercise ijtihad. He finds such jurists well beyond the supposed closing date, which is inconsistent with a genuinely closed gate, and argues on that basis that the closure narrative is largely a construction of later scholarship rather than a documented historical event. Because the claim that legal reasoning ever stopped is itself what Hallaq's evidence disputes, the origin period of the ijtihad-and-taqlid doctrine remains an open, argued question rather than a fixed one.

Source Was the Gate of Ijtihad Closed?, Wael B. Hallaq tier 1

Ijtihad and taqlid, Doctrines

Standing Scholarly debate

Concerns Origin Period Start Year

Currently States 900

Wael B. Hallaq's article Was the Gate of Ijtihad Closed?, International Journal of Middle East Studies 16:1, 1984, challenges the widely repeated claim that independent legal reasoning ceased in Sunni jurisprudence around the tenth century CE. Hallaq's method is close textual analysis of biographical dictionaries and juristic writings from the very period the closure is supposed to have occurred, searching for jurists who explicitly claimed, or were recognised by peers as holding, the status of mujtahid, one qualified to exercise ijtihad. He finds such jurists well beyond the supposed closing date, which is inconsistent with a genuinely closed gate, and argues on that basis that the closure narrative is largely a construction of later scholarship rather than a documented historical event. Because the claim that legal reasoning ever stopped is itself what Hallaq's evidence disputes, the origin period of the ijtihad-and-taqlid doctrine remains an open, argued question rather than a fixed one.

Source Was the Gate of Ijtihad Closed?, Wael B. Hallaq tier 1

Ijtihad and taqlid, Doctrines

Standing Scholarly debate

Concerns Origin Period End Year

Currently States 1500

Wael B. Hallaq's article Was the Gate of Ijtihad Closed?, International Journal of Middle East Studies 16:1, 1984, challenges the widely repeated claim that independent legal reasoning ceased in Sunni jurisprudence around the tenth century CE. Hallaq's method is close textual analysis of biographical dictionaries and juristic writings from the very period the closure is supposed to have occurred, searching for jurists who explicitly claimed, or were recognised by peers as holding, the status of mujtahid, one qualified to exercise ijtihad. He finds such jurists well beyond the supposed closing date, which is inconsistent with a genuinely closed gate, and argues on that basis that the closure narrative is largely a construction of later scholarship rather than a documented historical event. Because the claim that legal reasoning ever stopped is itself what Hallaq's evidence disputes, the origin period of the ijtihad-and-taqlid doctrine remains an open, argued question rather than a fixed one.

Source Was the Gate of Ijtihad Closed?, Wael B. Hallaq tier 1

Iliad and Odyssey, Other Writings

Standing Scholarly debate

Concerns Attributed Author / Compiler

Currently States Homer (traditional); products of an oral epic tradition given form in the 8th c. BCE, their single authorship debated since antiquity (the "Homeric Question")

The Homeric Question has been open since antiquity. The poems carry the formulaic diction of oral composition, which argues for a tradition rather than an author; against that, their scale and design have been read as the work of one shaping poet. Whether "Homer" names a person, a guild of singers or a convenient fiction is not settled.

Source The Oxford Classical Dictionary, 4th edition, Simon Hornblower, Antony Spawforth and Esther Eidinow (eds.) tier 1

Imbalu, Rituals

Standing Scholarly debate

Concerns Current Status

Currently States Thriving biennial institution; also debated over unhygienic traditional circumcision, injury and death risk, and pressure on reluctant candidates.

Imbalu is the Bagisu male circumcision initiation of western Kenya and eastern Uganda, held under the authority of the Bagisu people who practice it; the atlas describes its existence and social significance without reconstructing its ceremonial procedure, in keeping with the tradition's own closed status for that material. Jan de Wolf's Circumcision and Initiation in Western Kenya and Eastern Uganda: Historical Reconstructions and Ethnographic Evidence (1983) documents that public health authorities have since promoted medically supervised clinical alternatives to reduce infection and complication risk, and that families and communities differ over whether a clinically performed operation still counts as a full Imbalu, since the medical setting removes elements of the passage the community itself may hold as constitutive. De Wolf's method is historical and ethnographic fieldwork among Bagisu and neighbouring communities, documenting community debate rather than the ritual's own internal procedure. Coercion of reluctant candidates is documented in this literature as a real, not merely hypothetical, concern accompanying the tradition's continuation, which is why current status remains an active and debated question.

Source Circumcision and Initiation in Western Kenya and Eastern Uganda: Historical Reconstructions and Ethnographic Evidence, Jan J. de Wolf tier 1

Imperial Regalia of Japan, Artifacts & Relics

Standing Scholarly debate

Concerns Sword Loss Tradition

Currently States Original Kusanagi reported lost at the Battle of Dan-no-ura, 1185, and replaced

The Wikipedia contributors' Imperial Regalia of Japan entry (2025 access), summarizing Japanese chronicle sources, records the tradition that the sacred sword Kusanagi was lost in the sea during the 1185 naval Battle of Dan-no-ura. The entry's method is a survey of the several disagreeing medieval Japanese chronicle accounts of the loss, and it finds some accounts hold the sword recovered afterward was already a ceremonial replica rather than the original, an account that would mean no true loss of the original sword occurred at all, while other chronicles treat the lost sword as the genuine original.

Source Imperial Regalia of Japan (Wikipedia), Wikipedia contributors tier 3