Consensus is the third source in the Sunni ordering and the one hardest to establish. Whose agreement counts, over what period, and how anyone could know it was reached are all contested. Al-Shafii narrowed it to what the whole community knows and transmits, since only that can be established with certainty. Hanafi theory counts the agreement of the scholars of an age. The Maliki school gives particular weight to the scholars of Medina. Ibn Hanbal is reported to have distrusted claims of consensus past the generation of the Companions, on the ground that a man who claims it cannot have canvassed everyone. Jafari jurisprudence accepts consensus only where it discloses the position of the infallible Imam, which makes its authority derivative rather than independent. Quranist argument rejects it outright, holding that the Quran nowhere makes the agreement of scholars binding.
Facts
Origins
Held ByThe Sunni schools, on different definitions: al-Shafii narrowed it to what the whole community knows and transmits, Hanafi theory counts the agreement of the scholars of an age, and the Maliki school gives particular weight to the scholars of Medina. 1 Origin of the NameArabic ijma, agreement or resolve upon a matter. 1Tradition: Arabic Status
Status Within the TraditionStandard teaching, not formally defined 1Tradition: Sunni Doctrinal Category Position Profile
Principal CriticIbn Hanbal is reported to have distrusted any claim of consensus past the generation of the Companions, on the ground that a man who claims it cannot have canvassed everyone. 1 Disputed
Point in DisputeWhose 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. 1 Attestation
Meaning in the Attesting SourceThe third source in the Sunni ordering, and the hardest of the four to establish, since whose agreement counts, over what period, and how anyone could know it had been reached are each contested. 1 The Claim
The ClaimIjma, scholarly consensus, is counted in classical Sunni legal theory as a source of Islamic law alongside the Quran, the practice of the Prophet and analogical reasoning, though jurists have long disputed exactly whose agreement counts and how it can be known. 2 Learn More
How Anyone Could Know That Everyone Had Agreed
Consensus is the only one of the four Sunni sources that cannot be checked against a fixed text, and the schools disagree less about its authority than about how anyone could ever confirm it happened. Early jurists faced an obvious problem: the Muslim community was already too large and too scattered by the second Islamic century for any scholar to canvass its opinion directly, so claims of ijma rested on silence as much as on recorded agreement, the assumption that if a ruling had been publicly held and no qualified scholar is known to have objected, agreement could be inferred.
That inference is exactly what Ahmad ibn Hanbal is reported to have distrusted. Sources attribute to him a refusal to accept a claim of consensus reached after the generation of the Prophet's Companions, on the reasoning that later scholars were too numerous and too dispersed for anyone honestly to have surveyed them all, so a claimed ijma after that point is really one jurist's impression dressed as the whole community's voice. The distinction mattered practically: a ruling resting on Companion era consensus was treated as close to certain, while one resting on a later, unverifiable claim carried real jurists' names behind it but not the same evidentiary weight, which is why disputes over dating a given consensus recur throughout the historical formation of the Sunni schools of law.
Cross-Tradition Connections
Belongs to Tradition
Consensus binds, and Hanafi theory counts the agreement of the scholars of an age rather than requiring the agreement of the whole community.
Ibn Hanbal is reported to have distrusted claims of consensus beyond the generation of the Companions, on the ground that a man who claims it cannot have canvassed everyone.
Consensus binds in Jafari jurisprudence only where it discloses the position of the infallible Imam, so its authority is derivative rather than independent.
Consensus binds, and the Maliki school gives particular weight to the consensus of the scholars of Medina.
Al-Shafii accepted consensus but narrowed it, holding that only agreement on what the whole community knows and transmits can be established with certainty.
Critiqued By
Quranism, Denominations Quranist argument rejects consensus as a source of law, on the ground that the Quran nowhere makes the agreement of scholars binding.
Positions on This Question
Consensus is accepted in Ibadi legal theory, defined as the agreement of the Ibadi scholars.
Consensus is accepted in Salafi legal theory, restricted in practice to the consensus of the first generations.
Consensus is accepted in Twelver legal theory in a restricted sense: it binds because it discloses the Imam's position, not because agreement is authoritative in itself.
The consensus of the qualified is binding in Sunni legal theory, and each school defines whose agreement counts.
Consensus is accepted in Wahhabi legal theory, restricted in practice to the consensus of the first generations.
Consensus is accepted in Zaydi legal theory.
Sources
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