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
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
| Rank | Source (Arabic) | English label | Core idea |
|---|---|---|---|
| 1 | al-Qur'an | Quran | Primary revelation; supreme textual authority |
| 2 | al-Sunnah | Sunnah (Hadith) | Prophetic practice and reports; second primary source |
| 3 | al-Ijma' | Ijma (consensus) | Binding consensus of qualified mujtahids on a ruling |
| 4 | al-Qiyas | Qiyas (analogy) | Extending a known ruling to a new case via shared 'illah |
Hierarchy rules you must recite
- Nothing overrides a clear Quranic text on the same point (subject to recognized interpretive methods, including naskh—see Section 7.3).
- Sunnah elaborates, specifies, and applies the Quran; it does not sit “above” the Quran.
- Ijma cannot validly contradict the Quran or established Sunnah; it operates where texts need collective determination or where a ruling has crystallized by consensus.
- 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
| Point | Detail |
|---|---|
| Status | Primary, supreme, and definitive as revelation |
| Role | Establishes beliefs, worship, family, property, crime, and moral-legal norms |
| Language of law | Contains clear texts (nusus) and texts needing interpretation (mujmal, mutashabih themes in advanced usul) |
| Not | A 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
| Function | Meaning |
|---|---|
| Bayān / explanation | Clarifies concise Quranic commands (e.g., how to pray) |
| Tafsil / detail | Supplies quantities, conditions, and procedures |
| Takhsis / specification | Narrows a general Quranic wording where authorized |
| Tashri' / independent ruling | Establishes rulings not spelled out in the Quranic text (within usul debates, still second-tier authority) |
| Confirming | Reinforces what the Quran already states |
Classification cues (MCQ level)
| Classification axis | Labels you may see |
|---|---|
| By authenticity | Sahih (sound), hasan (good), da'if (weak)—authenticity affects use as proof |
| By chain | Mutawatir (mass-transmitted) vs ahad (solitary reports)—strength of transmission |
| By content | Verbal, 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
- Who: Qualified jurists capable of ijtihad (not every lay Muslim’s opinion)
- 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)
- What: A specific hukm on a legal issue
- Effect: Once validly established, classical theory treats Ijma as authoritative and not open to casual reopening
Types (short list for options)
| Type | Idea |
|---|---|
| Ijma sarih / qawli | Express verbal consensus |
| Ijma sukuti | Tacit consensus (some speak; others remain silent)—acceptance debated by schools |
| Ijma of Companions | Especially 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
| Arabic | English | Meaning |
|---|---|---|
| Asl | Original case | Case with an established ruling from Quran/Sunnah/Ijma |
| Hukm al-asl | Ruling of the original | The known legal ruling attached to the asl |
| Far' | New / parallel case | Case whose ruling is sought |
| 'Illah | Effective cause | Attribute 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)
| Situation | Governing idea |
|---|---|
| Clear Quranic text on point | Quran controls |
| Quran general; Sunnah explains practice | Apply Quran + Sunnah together |
| No clear text; jurists agree | Look for Ijma |
| Text exists for asl; new case shares 'illah | Use Qiyas |
| Apparent conflict between reports | Usul tools: authenticity, abrogation (naskh), reconciliation—not random preference |
| Custom vs clear text | Text prevails; custom may operate in gaps if valid ('urf) |
Primary vs secondary (exam vocabulary)
| Tier | Sources |
|---|---|
| Primary (usul) | Quran, Sunnah, Ijma, Qiyas (the four) |
| Secondary / supplementary | Istihsan, 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.
| Feature | Exam meaning |
|---|---|
| Literal sense | “To deem better” / prefer the better ruling |
| Function | Departure from strict Qiyas for a stronger proof or necessity |
| Not | Pure 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.
| Feature | Exam meaning |
|---|---|
| Goal | Secure benefit (jalb al-manfa'ah) and repel harm (daf' al-mafsadah) |
| Limit | Cannot legalize what texts clearly forbid |
| Link | Closely 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 cues | Invalid 'urf cues |
|---|---|
| Widespread, accepted, not opposing text | Custom of riba, or practice contradicting clear prohibition |
| Used to interpret contracts and local meanings | Claimed 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.
| Phrase | Meaning |
|---|---|
| Sadd | Blocking / closing |
| Dhara'i | Means / pretexts |
| Policy | Prevent harm before it materializes |
Quick secondary-methods card
| Method | One-line recall |
|---|---|
| Istihsan | Prefer stronger basis over strict Qiyas |
| Maslaha (mursalah) | Unrestricted public interest within Sharī'ah aims |
| 'Urf | Valid custom where text is silent/compatible |
| Sadd al-dhara'i | Block means that lead to prohibition |
Worked MCQ Logic (Source Stems)
| Stem pattern | Answer 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
In the classical hierarchy of sources of Islamic law taught for LAW-GAT, which source ranks first?
Qiyas (analogical reasoning) transfers a ruling from an original case to a new case primarily by identifying which shared element?
Which secondary method is best defined as blocking outwardly lawful means that lead predominantly to an unlawful result?