Qiyas is ANALOGY
Qiyas is ANALOGY — the fourth source of Islamic law, the disciplined method by which a ruling revealed for a named case is extended to a new case the texts never named, when both share the same effective cause ('illa). One source defines it as 'attributing the hukum of an existing case found in the Qur'anic texts, hadith, or ijma' to a new case whose hokum is not explicitly found in those sources, based on a common fundamental attribute known as 'illah'', and states plainly that 'The Qur'an, Sunnah and Ijma are the three primary sources of Islamic law; qiyas is the fourth.' A second, independently-worded source (Wikipedia) sets the three requirements verbatim: 'there must be a new case for which the Quran and Sunnah of the Prophet do not provide a clear ruling'; 'there must be an original case which was resolved using a hukm, or ruling, from the Quran, Sunnah, or the process of Ijma'; and 'there must be a common illa, or reasoning, which applies to both cases in an analogous way' — the 'illa itself being 'the specific set of circumstances that trigger a certain law into action.' This matters to riba-free finance because qiyas is exactly the tool that carries the riba prohibition — revealed on specific transactions — to modern instruments the texts never named (bank interest, bonds, fiat lending): 'the Qur'an never mentions credit cards' is no escape, because analogy reaches every new case that shares the prohibition's effective cause (Islamonweb 'Qiyas in Islamic jurisprudence' cross-read with Wikipedia 'Qiyas')
What this source says
Qiyas is analogy — the fourth source of Islamic law, and, for a site about riba-free finance, one of the most important sources to understand. It is the disciplined method by which a ruling that revelation gave for one named situation is carried across to a new situation the texts never explicitly addressed, on the strict condition that both share the same underlying reason. Two independent sources define it in their own words, and they agree. The first states it directly: qiyas is 'attributing the hukum of an existing case found in the Qur'anic texts, hadith, or ijma' to a new case whose hokum is not explicitly found in those sources, based on a common fundamental attribute known as 'illah'.' The second (Wikipedia) frames the same idea from another angle — 'the process of deductive analogy in which the teachings of the hadith are compared and contrasted with those of the Quran in Islamic jurisprudence' — and, describing the method in action, calls it the 'extension' of a ruling to a case the texts did not name. Where does qiyas sit among the sources of the law? Both sources place it fourth, after the two primary revealed sources and the consensus of the scholars. The first is unambiguous: 'The Qur'an, Sunnah and Ijma are the three primary sources of Islamic law; qiyas is the fourth.' The second agrees that among Sunni Muslims 'Qiyas has been accepted as a secondary source of Sharia law along with Ijmāʿ, after the primary sources of the Quran, and the Sunnah.' Qiyas, then, does not compete with the Qur'an and the Sunnah; it serves them, carrying their rulings faithfully into territory they did not spell out. What makes an analogy valid rather than arbitrary is its machinery, and here the second source is precise. 'In order for Qiyas to be used in Islamic law, three things are necessary. First, there must be a new case for which the Quran and Sunnah of the Prophet do not provide a clear ruling. Second, there must be an original case which was resolved using a hukm, or ruling, from the Quran, Sunnah, or the process of Ijma. Third, there must be a common illa, or reasoning, which applies to both cases in an analogous way.' The first source names these same moving parts in the traditional vocabulary of the jurists: the 'extension of a Shariah rule from an original case (ASl) to a new case (Far') because both cases share the same effective cause (I'llah).' So there are four elements: the asl, the original case whose ruling is fixed in revelation; the far', the new case awaiting a ruling; the hukm, the ruling itself; and — the pivot on which the whole method turns — the 'illa, the effective cause. As the second source puts it, 'the ʿillah is the specific set of circumstances that trigger a certain law into action.' Identify the reason a thing was ruled the way it was, find that same reason present in a new thing, and the ruling travels with it. The two sources even preserve a worked example of the mechanism at work: the Qur'an (62:9) suspends buying and selling once the last call to the Friday prayer is made, and 'by analogy this prohibition is extended to other transactions and activities such as agricultural work and administration' — the ruling was given for trade, but its reason (turning away from the remembrance of God at that hour) reaches anything else that would do the same. Now the connection to this corpus, made carefully and honestly. Qiyas is the source that answers one of the most common objections to applying the riba prohibition today: 'the Qur'an and the Sunnah say nothing about credit cards, corporate bonds, mortgage interest, or fiat currency — these are modern inventions the texts never mention.' That objection has the mechanism of Islamic law exactly backwards. The absence of an instrument from the revealed texts is not a licence; it is precisely the condition under which qiyas operates — recall the first requirement, 'a new case for which the Quran and Sunnah of the Prophet do not provide a clear ruling.' The riba prohibition is a fixed ruling in the primary sources (the asl), with a discernible effective cause; wherever that same 'illa is present in a new financial instrument (the far'), the prohibition is extended to it by analogy. The novelty of the instrument does not exempt it — it is exactly what invites the analogy. This is why the classical jurists did not stop at the specific transactions named in the texts but reasoned outward to the ratio behind them, and why contemporary scholars can and do bring modern interest-bearing products under the same ruling: the method for doing so is not innovation but the fourth source of the law itself. A note on the limits of what is claimed here, in keeping with this corpus's discipline. The two sources cross-read for this entry establish the DEFINITION, the FOURTH-SOURCE status, the ELEMENTS (asl, far', hukm, 'illa), and the MECHANISM of qiyas — all verbatim. They do not, in the passages read, spell out the classical riba analogy in its textbook form (the hadith of the six exchanged commodities — gold, silver, wheat, barley, dates, salt — and the debate over their precise 'illa), so no such detail is asserted here as a sourced quotation; the riba connection above is reasoned strictly from the verbatim general mechanism, not from any specific commodity-list text these sources did not contain. What the sources do establish is enough for the load-bearing point: qiyas is a real, disciplined, revelation-serving source of law whose entire purpose is to carry a fixed ruling to the cases the texts did not name — which is exactly how the prohibition of riba reaches the financial instruments of the present day. Understanding qiyas is therefore understanding why riba-free finance is not a niche literalism about six ancient commodities, but the consistent application of a clear ruling, by the law's own fourth source, to everything that shares its cause.
Wording inside quotation marks is quoted from the source. The rest is this notebook’s summary of it — read the original before relying on it.
Provenance
- Compiled from
- Compiled from two genuinely different sources cross-read 2026-07-04: [1] Islamonweb (English), 'Qiyas in Islamic jurisprudence' by Muhammed Junaid (3 Apr 2024) for the definition ('attributing the hukum of an existing case found in the Qur'anic texts, hadith, or ijma' to a new case whose hokum is not explicitly found in those sources, based on a common fundamental attribute known as 'illah''), the fourth-source statement ('The Qur'an, Sunnah and Ijma are the three primary sources of Islamic law; qiyas is the fourth'), and the elements ('extension of a Shariah rule from an original case (ASI) to a new case (Far') because both cases share the same effective cause (I'llah)'); and [2] Wikipedia, 'Qiyas' for a second, independently-worded definition ('the process of deductive analogy in which the teachings of the hadith are compared and contrasted with those of the Quran in Islamic jurisprudence'), the fourth-source placement ('Qiyas has been accepted as a secondary source of Sharia law along with Ijmāʿ, after the primary sources of the Quran, and the Sunnah'), the 'illa gloss ('The ʿillah is the specific set of circumstances that trigger a certain law into action'), and the three verbatim requirements ('there must be a new case for which the Quran and Sunnah of the Prophet do not provide a clear ruling'; 'there must be an original case which was resolved using a hukm, or ruling'; 'there must be a common illa, or reasoning, which applies to both cases in an analogous way'). Cross-confirmed
- Source
- DEFINITION ('attributing the hukum of an existing case found in the Qur'anic texts, hadith, or ijma' to a new case whose hokum is not explicitly found in those sources, based on a common fundamental attribute known as 'illah'') + FOURTH-SOURCE STATEMENT ('The Qur'an, Sunnah and Ijma are the three primary sources of Islamic law; qiyas is the fourth') + ELEMENTS ('extension of a Shariah rule from an original case (ASl) to a new case (Far') because both cases share the same effective cause (I'llah)') — all verbatim from [1] Islamonweb, 'Qiyas in Islamic jurisprudence' by Muhammed Junaid, 3 Apr 2024 (https://en.islamonweb.net/qiyas-in-islamic-jurisprudence), fetched and read 2026-07-04. DEFINITION 2 ('the process of deductive analogy in which the teachings of the hadith are compared and contrasted with those of the Quran in Islamic jurisprudence') + PLACEMENT ('Qiyas has been accepted as a secondary source of Sharia law along with Ijmāʿ, after the primary sources of the Quran, and the Sunnah') + 'ILLA GLOSS ('The ʿillah is the specific set of circumstances that trigger a certain law into action') + THE THREE REQUIREMENTS ('In order for Qiyas to be used in Islamic law, three things are necessary. First, there must be a new case for which the Quran and Sunnah of the Prophet do not provide a clear ruling. Second, there must be an original case which was resolved using a hukm, or ruling, from the Quran, Sunnah, or the process of Ijma. Third, there must be a common illa, or reasoning, which applies to both cases in an analogous way') + WORKED EXAMPLE ('An example of the use of qiyās is the case of the ban on selling or buying of goods after the last call for Friday prayers... By analogy this prohibition is extended to other transactions and activities such as agricultural work and administration') — all verbatim from [2] Wikipedia, 'Qiyas' (https://en.wikipedia.org/wiki/Qiyas), fetched and read 2026-07-04. Two genuinely DIFFERENT sources cross-read; the definition, the fourth-source placement, and the asl/far'/hukm/'illa mechanism cross-confirm across both. The RIBA-FREE POINT (the absence of a modern instrument from the texts is the condition for qiyas, not an exemption; the fixed riba ruling is extended by analogy to any new instrument sharing its 'illa) is reasoned directly from the verbatim mechanism, NOT asserted as a fabricated quote; the classical six-commodities riba analogy is explicitly NOT quoted because it does not appear in either fetched passage.
- School / basis
- Comparative / foundational (usul al-fiqh: qiyas = ANALOGY, the FOURTH source of Islamic law after Qur'an, Sunnah and ijma). Definition cross-read: qiyas is 'attributing the hukum of an existing case found in the Qur'anic texts, hadith, or ijma' to a new case whose hokum is not explicitly found in those sources, based on a common fundamental attribute known as 'illah'' [source 1]; 'the process of deductive analogy in which the teachings of the hadith are compared and contrasted with those of the Quran' [source 2]. PLACEMENT: 'The Qur'an, Sunnah and Ijma are the three primary sources of Islamic law; qiyas is the fourth' [source 1]; 'Qiyas has been accepted as a secondary source of Sharia law along with Ijmāʿ, after the primary sources of the Quran, and the Sunnah' [source 2]. ELEMENTS (four pillars): asl (original case), far' (new case), hukm (ruling), 'illa (effective cause) — source 1: 'extension of a Shariah rule from an original case (ASl) to a new case (Far') because both cases share the same effective cause (I'llah)'; source 2 gives the three requirements verbatim ('a new case for which the Quran and Sunnah... do not provide a clear ruling'; 'an original case which was resolved using a hukm, or ruling'; 'a common illa, or reasoning, which applies to both cases in an analogous way') and glosses the pivot ('the ʿillah is the specific set of circumstances that trigger a certain law into action'). WORKED EXAMPLE (source 2, verbatim): the Qur'an 62:9 Friday-prayer trade ban, where 'by analogy this prohibition is extended to other transactions and activities such as agricultural work and administration'. Load-bearing for THIS site: qiyas is the source that answers 'the texts never mention credit cards / bonds / fiat / mortgage interest' — the ABSENCE of a modern instrument from revelation is not a licence but precisely the condition under which qiyas operates (its first requirement is 'a new case for which the Quran and Sunnah... do not provide a clear ruling'); the fixed riba ruling (asl) is extended to any new instrument (far') sharing its 'illa. The riba connection is reasoned STRICTLY from the verbatim general mechanism. Deliberately NOT asserted as a sourced quote: the classical six-exchanged-commodities riba hadith (gold/silver/wheat/barley/dates/salt) and the madhhab debate over its precise 'illa (weight/measure vs money-ness vs foodstuff) — NOT present in either fetched passage, so no commodity-list detail is quoted; also NOT asserted: any hadith collection/number, any AAOIFI/OIC resolution number, any named-jurist attribution beyond the al-Shafi'i-as-systematiser commonplace (which is itself not relied on as a quote here).
- Captured
- 2026-07-04
- Added
- 2026-07-04
- Trust
- Useful and cited, but with an editorial or commercial lean worth cross-checking.
Compiler’s note
First DEDICATED QIYAS / ANALOGY / FOURTH-SOURCE entry in the corpus — one of the NEXT natural candidates named at the end of round-94 ('QIYAS (analogy, the source that extends the riba ruling to new instruments)'), now closed with its own two-source-verifiable pair. Grep-confirmed before writing: `ls content/articles | grep -iE 'qiyas|analogy|asl|far|hukm|illa'` returned NOTHING matching qiyas — no existing qiyas/analogy article, no duplication. WHY QIYAS NOW: with the core contracts (mudaraba/musharakah/murabaha/ijara/salam/istisna/tawarruq), the tabarru' cluster, wa'd, khiyar, 'urf, darura and maslaha plus the classical prohibitions (riba/gharar/maisir) already in the corpus, qiyas is the highest-value remaining classical core because it is the SOURCE MECHANISM by which the riba ruling reaches instruments revelation never named — the single most load-bearing usul concept for 'why does the riba prohibition apply to modern interest / bonds / fiat at all?'. Two genuinely different, cleanly-fetchable HTML sources (a dedicated English fiqh article + Wikipedia) supplied verbatim the definition, the fourth-source placement, the four elements (asl/far'/hukm/'illa), the three requirements, the 'illa gloss, and a worked example — clearing the two-source bar. LOAD-BEARING LINK TO THE SITE, handled HONESTLY: qiyas answers the common objection 'the Qur'an never mentions credit cards / bonds / fiat / mortgage interest, so the riba rules can't apply'. That objection inverts the mechanism: the ABSENCE of a modern instrument from the texts is precisely the FIRST REQUIREMENT for qiyas ('a new case for which the Quran and Sunnah... do not provide a clear ruling'), not an exemption from it. The fixed riba ruling (asl) is carried to any new instrument (far') that shares its effective cause ('illa). So riba-free finance is not literalism about ancient commodities but the consistent application of a clear ruling, by the law's own fourth source, to everything sharing its cause — reinforcing the site's recurring substance-over-form lesson from the usul side. VERIFICATION: every load-bearing quote verified BY ME 2026-07-04, verbatim, across TWO genuinely different sources — [1] Islamonweb 'Qiyas in Islamic jurisprudence' (Muhammed Junaid, 3 Apr 2024): definition, fourth-source statement, asl/far'/'illa extension; [2] Wikipedia 'Qiyas': second independent definition, placement, 'illa gloss, the three verbatim requirements, and the Friday-prayer (62:9) worked example. Both plain HTML pages via WebFetch — no compressed-PDF local extraction needed this run. TRUST 'medium' (a dedicated English fiqh article + a general encyclopaedia reproducing standard usul; NOT a primary al-Shafi'i Risala, al-Ghazali Mustasfa, AAOIFI Shari'ah Standard, or OIC Islamic Fiqh Academy resolution read directly). DELIBERATELY DROPPED / NOT ASSERTED per the no-fabrication rule: (a) the classical SIX-EXCHANGED-COMMODITIES riba hadith (gold, silver, wheat, barley, dates, salt) and the madhhab debate over its precise 'illa (weight/measure vs money-ness/thamaniyya vs foodstuff/storability) — this is the textbook riba-qiyas illustration, but it is NOT present in either fetched passage, so it is NOT quoted or attributed here; the riba link is reasoned only from the verbatim GENERAL mechanism, and the entry explicitly says so; (b) any hadith collection/number; (c) any AAOIFI/OIC/BNM resolution number and any market/AUM figure (a classical usul doctrine has none; none invented); (d) any named-jurist attribution asserted as a quote (the al-Shafi'i-as-first-systematiser point surfaced in web-search summaries is a commonplace but is NOT relied on as a sourced quotation in the entry). The al-Baqarah riba texts are the site's own repeatedly-cited core verses and are referenced, not newly quoted, here. FRESHNESS-HONEST: all claims are structural/definitional/doctrinal or verbatim source quotes; nothing time-sensitive. JSON-only per the established article convention (content/articles/*.json feed app/lib/corpus.ts via readdirSync + the /corpus stats badge + Phase-2 retrieval; NOT rendered as individual routed cards), so no SourceCard/route/href added and internal-link integrity is unaffected. Articles 54->55, corpus total 152->153 (articles 55 + books 23 + youtube 23 + curated 52 = 153). NEXT natural candidate for a future run: with the core contracts + prohibitions + wa'd + khiyar + 'urf + darura + maslaha + qiyas now covered, remaining classical cores worth a dedicated two-source-verified entry are SADD AL-DHARA'I (blocking the means — directly relevant to tawarruq/hila critiques), RUKHSA vs 'AZIMA (concession vs strict rule), IJMA (consensus — the third source, the only major source not yet given its own entry), or a primary-sourced OIC/AAOIFI resolution IF a fetchable verbatim primary surfaces (prior runs hit 403s on the primaries) — each still needs its own two-source-verifiable pair first. PUNCH-LIST FULLY TICKED; this entry advances the sole live corpus lever.
Topics
islamic-financeislamic-contract-lawusul-al-fiqhqiyasanalogyanalogical-reasoninganalogical-deductionfourth-source-of-lawsources-of-islamic-lawquran-sunnah-ijma-qiyasasloriginal-casefarnew-casebranch-casehukmrulingillaillaheffective-causeratio-legisshared-causeextension-of-rulingnew-case-no-clear-textribariba-extended-by-analogymodern-instrumentsbank-interestbondsfiat-currencytexts-never-named-it-is-no-escapesubstance-over-formconsistency-of-the-ruling
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