7.1 Sources of Islamic Law

Key Takeaways

  • The four primary sources of Islamic law in classical usul hierarchy are the Quran, Sunnah (Hadith), Ijma (consensus), and Qiyas (analogy)
  • The Quran is the primary and supreme textual source; the Sunnah is the second primary source explaining, elaborating, and applying revelation
  • Ijma is the consensus of qualified jurists (mujtahids) after the Prophet’s time on a legal ruling; it ranks after Quran and Sunnah
  • Qiyas extends an established ruling from an original case (asl) to a new case (far') by a shared effective cause ('illah)
  • Secondary/supplementary methods—istihsan, maslaha (mursalah), 'urf, and sadd al-dhara'i—operate within primary-source limits and appear in LAW-GAT MCQs at definition level
Last updated: August 2026

Sources of Islamic Law

Quick Answer: For LAW-GAT’s Islamic Jurisprudence (5 marks), master the classical hierarchy of sources taught in Pakistani LLB outlines (Nyazee-oriented usul al-fiqh): (1) Quran, (2) Sunnah (Hadith), (3) Ijma, (4) Qiyas. Know what each source is, how they rank when they conflict or interact, and the short definitions of secondary methods (istihsan, maslaha, 'urf, sadd al-dhara'i).

Why Sources Dominate This 5-Mark Domain

Islamic Jurisprudence on LAW-GAT is almost entirely definition and classification work. Examiners do not ask you to draft a fatwa. They ask which source is primary, what Qiyas requires, what Ijma means, or which label matches a short description. Treat the source hierarchy as a closed flashcard set—the same way English Jurisprudence treats Salmond’s definitions.


The Classical Four-Source Hierarchy

RankSource (Arabic)English labelCore idea
1al-Qur'anQuranPrimary revelation; supreme textual authority
2al-SunnahSunnah (Hadith)Prophetic practice and reports; second primary source
3al-Ijma'Ijma (consensus)Binding consensus of qualified mujtahids on a ruling
4al-QiyasQiyas (analogy)Extending a known ruling to a new case via shared 'illah

Hierarchy rules you must recite

  1. Nothing overrides a clear Quranic text on the same point (subject to recognized interpretive methods, including naskh—see Section 7.3).
  2. Sunnah elaborates, specifies, and applies the Quran; it does not sit “above” the Quran.
  3. Ijma cannot validly contradict the Quran or established Sunnah; it operates where texts need collective determination or where a ruling has crystallized by consensus.
  4. Qiyas is subordinate: it extends rulings already grounded in Quran, Sunnah, or Ijma; it does not invent a rule against a clear text (nass).

Memory line: Quran → Sunnah → Ijma → Qiyas (primary four). Secondary tools come after these and within their limits.


1. The Quran (Primary Source)

The Quran is the word of Allah revealed to the Prophet Muhammad (peace be upon him), preserved as the foundational textual source (asl) of Islamic law. In usul terms it is the first and highest source of hukm shar'i (Sharī'ah ruling).

Exam-safe points

PointDetail
StatusPrimary, supreme, and definitive as revelation
RoleEstablishes beliefs, worship, family, property, crime, and moral-legal norms
Language of lawContains clear texts (nusus) and texts needing interpretation (mujmal, mutashabih themes in advanced usul)
NotA complete modern code of procedure; many detailed rules come via Sunnah and juristic reasoning

What MCQs usually test

  • Quran is the primary source—not “equal first” with custom
  • Quran is revelation, not “mere literature” or “only ethics”
  • Detailed application often needs Sunnah even when the Quran states a principle

Trap: Options that place 'urf (custom) or maslaha above a clear Quranic ruling are wrong in the classical hierarchy taught for LAW-GAT.


2. The Sunnah (Hadith) — Second Primary Source

Sunnah means the Prophet’s normative practice: sayings (qawl), actions (fi'l), and tacit approvals (taqrir). Hadith is the report transmitting that Sunnah. In exam language the two terms are often paired as Sunnah (Hadith).

Functions of the Sunnah relative to the Quran

FunctionMeaning
Bayān / explanationClarifies concise Quranic commands (e.g., how to pray)
Tafsil / detailSupplies quantities, conditions, and procedures
Takhsis / specificationNarrows a general Quranic wording where authorized
Tashri' / independent rulingEstablishes rulings not spelled out in the Quranic text (within usul debates, still second-tier authority)
ConfirmingReinforces what the Quran already states

Classification cues (MCQ level)

Classification axisLabels you may see
By authenticitySahih (sound), hasan (good), da'if (weak)—authenticity affects use as proof
By chainMutawatir (mass-transmitted) vs ahad (solitary reports)—strength of transmission
By contentVerbal, actual, tacit approval

Exam rule: Sunnah is second after the Quran, not optional biography. A weak report is not treated like a definitive Quranic nass.


3. Ijma (Consensus)

Ijma is the agreement (consensus) of the mujtahids of the Muslim community after the death of the Prophet on a particular legal ruling (hukm shar'i) in a given age (definitions vary slightly by school; LAW-GAT uses the standard textbook core).

Elements to memorize

  1. Who: Qualified jurists capable of ijtihad (not every lay Muslim’s opinion)
  2. When: After the Prophetic era (the Prophet’s own determination is Sunnah, not “ijma of Companions” in the same technical slot—though Companion consensus is often discussed as a strong form)
  3. What: A specific hukm on a legal issue
  4. Effect: Once validly established, classical theory treats Ijma as authoritative and not open to casual reopening

Types (short list for options)

TypeIdea
Ijma sarih / qawliExpress verbal consensus
Ijma sukutiTacit consensus (some speak; others remain silent)—acceptance debated by schools
Ijma of CompanionsEspecially strong historical form in many teaching outlines

Trap: Ijma is not “public opinion polls,” “majority of parliament,” or “custom of traders” without the juristic consensus framing.


4. Qiyas (Analogical Reasoning)

Qiyas is analogical deduction: giving a new case the same ruling as an original case because both share the effective cause ('illah).

Four pillars (arkan) of Qiyas — highest-yield table

ArabicEnglishMeaning
AslOriginal caseCase with an established ruling from Quran/Sunnah/Ijma
Hukm al-aslRuling of the originalThe known legal ruling attached to the asl
Far'New / parallel caseCase whose ruling is sought
'IllahEffective causeAttribute common to asl and far' that justifies transferring the hukm

Classic classroom illustration (structure only)

  • Asl: wine (khamr) forbidden
  • Hukm: prohibition
  • 'Illah: intoxicating effect (in the standard teaching example)
  • Far': another intoxicant sharing that 'illah
  • Result: prohibition extends by Qiyas

Limits of Qiyas

  • No Qiyas against a clear nass (text) on the point
  • 'Illah must be identifiable (not pure whim)
  • Some domains are treated as non-analogizable in stricter school views (exam may only ask the general definition)

Trap: Qiyas is not “personal taste,” “equity alone,” or “public vote.” It is rule-extension by shared 'illah.


Relationship Hierarchy (How Sources Interact)

SituationGoverning idea
Clear Quranic text on pointQuran controls
Quran general; Sunnah explains practiceApply Quran + Sunnah together
No clear text; jurists agreeLook for Ijma
Text exists for asl; new case shares 'illahUse Qiyas
Apparent conflict between reportsUsul tools: authenticity, abrogation (naskh), reconciliation—not random preference
Custom vs clear textText prevails; custom may operate in gaps if valid ('urf)

Primary vs secondary (exam vocabulary)

TierSources
Primary (usul)Quran, Sunnah, Ijma, Qiyas (the four)
Secondary / supplementaryIstihsan, maslaha (mursalah), 'urf, sadd al-dhara'i, and related juristic tools

Secondary methods are not free-standing rivals to the Quran. They are techniques and considerations used by mujtahids within the framework of the primary sources.


Secondary / Supplementary Methods (MCQ Level)

Pakistani LLB Islamic jurisprudence (Nyazee-style outlines) expects short definitions. Depth is limited; accuracy of labels wins marks.

1. Istihsan (Juristic Preference)

Istihsan is a jurist’s preference for a stronger ground over a strict apparent analogy—choosing a solution supported by a stronger text, consensus, necessity, or hidden analogy when rigid Qiyas would lead to hardship or weaker result. Especially associated with Hanafi methodology in teaching materials.

FeatureExam meaning
Literal sense“To deem better” / prefer the better ruling
FunctionDeparture from strict Qiyas for a stronger proof or necessity
NotPure personal desire without legal basis

2. Maslaha / Maslahah Mursalah (Public Interest)

Maslaha means benefit / public interest. Maslahah mursalah refers to unrestricted public interest not expressly affirmed or rejected by a specific text—used (especially in Maliki and broader usul discussions) to secure benefits and prevent harm consistent with Sharī'ah objectives.

FeatureExam meaning
GoalSecure benefit (jalb al-manfa'ah) and repel harm (daf' al-mafsadah)
LimitCannot legalize what texts clearly forbid
LinkClosely related to maqasid al-sharia (Section 7.3)

3. 'Urf (Custom)

'Urf is customary practice recognized as a basis for rulings in matters where the Sharī'ah has not fixed a contrary rule—especially commercial and social habits, provided the custom is sound (not corrupt) and does not contradict nass.

Valid 'urf cuesInvalid 'urf cues
Widespread, accepted, not opposing textCustom of riba, or practice contradicting clear prohibition
Used to interpret contracts and local meaningsClaimed to repeal Quran/Sunnah

4. Sadd al-Dhara'i (Blocking the Means)

Sadd al-dhara'i means blocking lawful means that lead predominantly to unlawful ends. If an act is outwardly permitted but reliably opens the door to haram, the law may prohibit the means to protect the end.

PhraseMeaning
SaddBlocking / closing
Dhara'iMeans / pretexts
PolicyPrevent harm before it materializes

Quick secondary-methods card

MethodOne-line recall
IstihsanPrefer stronger basis over strict Qiyas
Maslaha (mursalah)Unrestricted public interest within Sharī'ah aims
'UrfValid custom where text is silent/compatible
Sadd al-dhara'iBlock means that lead to prohibition

Worked MCQ Logic (Source Stems)

Stem patternAnswer direction
“Supreme / primary source of Islamic law”Quran
“Second primary source; Prophetic practice”Sunnah / Hadith
“Consensus of mujtahids after the Prophet”Ijma
“Extension by common effective cause ('illah)”Qiyas
“Asl, far', hukm, 'illah”Pillars of Qiyas
“Blocking means to evil”Sadd al-dhara'i
“Juristic preference over strict analogy”Istihsan

Key Takeaways

  • Memorize the order: Quran → Sunnah → Ijma → Qiyas
  • Quran is supreme primary text; Sunnah explains and applies
  • Ijma = juristic consensus; Qiyas = analogy via 'illah (four arkan)
  • Secondary methods are supplementary, not rivals to nass
  • LAW-GAT rewards precise labels, not long philosophical essays
Test Your Knowledge

In the classical hierarchy of sources of Islamic law taught for LAW-GAT, which source ranks first?

A
B
C
D
Test Your Knowledge

Qiyas (analogical reasoning) transfers a ruling from an original case to a new case primarily by identifying which shared element?

A
B
C
D
Test Your Knowledge

Which secondary method is best defined as blocking outwardly lawful means that lead predominantly to an unlawful result?

A
B
C
D