How courts decide whether an unconstitutional law dies entirely or only in part, and how a pre-Constitution law can revive once the conflicting right is removed.
At a glance
Severability strikes down only the unconstitutional part of a law if separable; eclipse renders a pre-Constitution law dormant rather than void.
Bhikaji Narain Dhakras v. State of M.P. (1955) enunciated the doctrine of eclipse using Section 43, Motor Vehicles Act, 1939.
Article 13(1) and 13(2) — laws void 'to the extent of' inconsistency with Fundamental Rights.
Determines whether an unconstitutional law is wholly dead or can survive/revive in part, shaping judicial review outcomes.
Timeline
Severability and eclipse are two judge-made doctrines that guide how Article 13 of the Constitution is applied when a law is found to clash with Fundamental Rights. Severability decides how much of a law falls when only part of it is unconstitutional, while eclipse decides what happens to a pre-Constitution law that conflicts with a Fundamental Right rather than declaring it dead forever. Both doctrines flow from the same constitutional provision but answer different questions, and together they shape how courts strike down or salvage legislation.
Doctrine of Severability
When a court finds that a part of a statute violates a Fundamental Right, it must decide whether the entire statute falls or only the offending part. The doctrine of severability (also called separability) holds that if the invalid portion can be separated from the valid portion, only the invalid part is struck down and the rest of the law continues to operate. If the valid and invalid parts are so mixed together that they cannot be separated, the whole law is declared void.
Constitutional basis
Article 13 supplies the foundation for this doctrine:
- Article 13(1) provides that all laws in force before the Constitution commenced are void to the extent of their inconsistency with Fundamental Rights.
- Article 13(2) bars the state from making any post-Constitution law that takes away or abridges Fundamental Rights, and declares any such law void to the extent of the contravention.
In both clauses, the phrase "to the extent of" is significant — it limits invalidity to the offending portion rather than automatically voiding the entire enactment, which is what gives the severability doctrine its textual anchor.
How courts test separability
The Supreme Court has relied on the legislature's intent as the determining factor: would the legislature have enacted the valid portion on its own, had it known the rest would be struck down? Courts have applied roughly the following working rules:
| Situation | Outcome |
|---|---|
| Valid and invalid parts are inextricably mixed | Entire Act is void |
| Valid part can stand alone as a complete, workable code after removing the invalid part | Valid part survives |
| What remains after removing the invalid part needs alteration to be enforced | Entire Act is struck down (courts will not rewrite legislation) |
| Legislative history, object, title, and preamble indicate intent | Used as aids to decide separability |
In A.K. Gopalan v. State of Madras (1950), the Supreme Court struck down only Section 14 of the Preventive Detention Act, 1950, holding that this specific provision was unconstitutional while leaving the rest of the Act intact — an early illustration of severability in practice.
Doctrine of Eclipse
The doctrine of eclipse deals with a different question: what is the legal status of a pre-Constitution law that conflicts with a Fundamental Right? Because Article 13(1) is prospective in effect — it applies from the date the Constitution commenced — such a law is not treated as void from its inception. Instead, it becomes inoperative only from the commencement of the Constitution. The law is not wiped off the statute book; it is overshadowed, or "eclipsed," by the Fundamental Right and lies dormant rather than dead.
A law under this eclipse continues to exist for limited purposes:
- for all past transactions completed before the Constitution came into force;
- for enforcing rights and liabilities that arose before the Constitution's commencement;
- for determining the rights of non-citizens, who cannot claim the Fundamental Right in question.
If the inconsistency is later removed — typically through a constitutional amendment altering the relevant Fundamental Right — the eclipse lifts and the law becomes fully operative again, without needing to be re-enacted.
The Bhikaji Narain Dhakras case
The doctrine of eclipse was enunciated in Bhikaji Narain Dhakras v. State of Madhya Pradesh (1955). Section 43 of the Motor Vehicles Act, 1939 had come into conflict with Article 19(1)(g), the right to carry on trade or business. This made the provision inoperative from the Constitution's commencement in 1950. However, the Constitution (First Amendment) Act, 1951 modified Article 19(6), removing the inconsistency. The Supreme Court held that the notification issued under Section 43 became valid again once the amendment lifted the eclipse — the underlying provision had never been erased, only overshadowed.
Does eclipse apply to post-Constitution laws?
The Supreme Court has drawn a clear line here. In the Deep Chand case (1959), it held that the doctrine of eclipse applies only to pre-Constitution laws governed by Article 13(1), not to post-Constitution laws governed by Article 13(2). A post-Constitution law that contravenes a Fundamental Right is void from its very inception — a "still-born" law — and cannot be revived by a later constitutional amendment. On this basis, the Court upheld the Uttar Pradesh Transport Service (Development) Act, 1955, finding it did not violate Article 31. In Mahendra Lal Jain v. State of Uttar Pradesh (1962), the Court reiterated this position, confirming that eclipse is confined to pre-Constitution laws under Article 13(1) and has no application to laws made after the Constitution came into force.
Severability and Eclipse Compared
| Aspect | Doctrine of Severability | Doctrine of Eclipse |
|---|---|---|
| Question addressed | How much of an invalid law falls | What happens to a pre-Constitution law in conflict with a Fundamental Right |
| Applies to | Both pre- and post-Constitution laws | Only pre-Constitution laws (Article 13(1)) |
| Effect on the law | Invalid part struck down; rest survives if separable | Whole law becomes dormant/inoperative, not void from inception |
| Can the law revive? | Not applicable — surviving part was never invalid | Yes, if the inconsistency with the Fundamental Right is later removed |
| Key case | A.K. Gopalan v. State of Madras (1950) | Bhikaji Narain Dhakras v. State of M.P. (1955) |
UPSC Relevance
Prelims
- Both doctrines trace to Article 13 of the Constitution.
- Eclipse applies only to pre-Constitution laws (Article 13(1)); it does not apply to post-Constitution laws (Article 13(2)).
- Bhikaji Narain Dhakras case involved Section 43 of the Motor Vehicles Act, 1939 and Article 19(1)(g).
- Deep Chand (1959) and Mahendra Lal Jain (1962) confirmed eclipse's limited application to pre-Constitution laws.
Mains
- Explain how Article 13's "to the extent of" language grounds the doctrine of severability, and discuss the tests courts use to determine whether an invalid provision can be separated.
- Distinguish the doctrine of eclipse from the doctrine of severability, with reference to the Bhikaji Narain Dhakras and Deep Chand cases, and examine why the eclipse doctrine cannot apply to post-Constitution legislation.
FAQ
Q1. What is the doctrine of severability? It is the principle that when only part of a law is unconstitutional, courts strike down only that part if it can be separated from the rest, leaving the remainder of the law operative.
Q2. What is the doctrine of eclipse? It holds that a pre-Constitution law inconsistent with a Fundamental Right is not void from inception but becomes inoperative (eclipsed) from the Constitution's commencement, and can revive if the inconsistency is later removed.
Q3. Which case established the doctrine of eclipse? Bhikaji Narain Dhakras v. State of Madhya Pradesh (1955), concerning Section 43 of the Motor Vehicles Act, 1939 and its conflict with Article 19(1)(g).
Q4. Does the doctrine of eclipse apply to laws made after the Constitution came into force? No. The Supreme Court held in the Deep Chand case (1959) and reaffirmed in Mahendra Lal Jain (1962) that eclipse applies only to pre-Constitution laws under Article 13(1); a post-Constitution law violating Fundamental Rights is void from its inception.
Q5. What determines whether a law is severable? Legislative intent is the determining factor — courts ask whether the legislature would have enacted the valid portion alone, and whether what remains after removing the invalid part is a complete, workable law.
Quick Revision
- Severability: invalid part removed, valid part survives if separable — applies to both pre- and post-Constitution laws.
- Eclipse: pre-Constitution law becomes dormant, not dead — can revive if the conflicting Fundamental Right is amended.
- Basis for both: Article 13(1) and 13(2).
- Eclipse case: Bhikaji Narain Dhakras v. State of M.P. (1955) — Section 43, Motor Vehicles Act, 1939, Article 19(1)(g), lifted by the 1st Amendment.
- Eclipse limited to pre-Constitution laws: Deep Chand (1959), Mahendra Lal Jain (1962).
- Severability case: A.K. Gopalan v. State of Madras (1950) — Section 14, Preventive Detention Act struck down alone.
Sources
- Constitution of India, Article 13 — https://legislative.gov.in/constitution-of-india/
- Supreme Court of India — case records for A.K. Gopalan v. State of Madras (1950), Bhikaji Narain Dhakras v. State of Madhya Pradesh (1955), Deep Chand v. State of Uttar Pradesh (1959), and Mahendra Lal Jain v. State of Uttar Pradesh (1962), available via https://main.sci.gov.in/judgments
Further Reference
For deeper reading on this topic and the wider polity syllabus, these standard works are recommended:
- M. Laxmikanth, Indian Polity (McGraw Hill) — the standard UPSC handbook.
- D.D. Basu, Introduction to the Constitution of India (LexisNexis) — authoritative constitutional-law treatment.
- The Constitution of India — Bare Act — the official text.
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Constitutional provisions
Pre-Constitution laws inconsistent with Fundamental Rights are void to the extent of inconsistency; basis of the eclipse doctrine.
Bars the state from post-Constitution laws abridging Fundamental Rights; such laws are void to the extent of contravention.
Right to practise any profession or carry on trade/business — the right in conflict in the Bhikaji Narain Dhakras case.
Permits reasonable restrictions on Article 19(1)(g); its 1951 amendment lifted the eclipse on Section 43, Motor Vehicles Act.