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Judge-made principles such as basic structure, severability, eclipse and pith and substance that the Supreme Court uses to interpret and test the validity of laws.
Constitutional doctrines are judge-made interpretive principles that the Supreme Court of India has developed while deciding whether a law is valid, which legislature was competent to pass it, and how far Parliament's amending power extends. They are not written into the Constitution. They are the accumulated reasoning of judicial review under Articles 13, 32, 141, 245, 246 and 368, and because Article 141 makes the law declared by the Supreme Court binding on all courts, a doctrine once laid down operates with the force of law. Some are borrowed — pith and substance and colourable legislation come from Canadian and Privy Council jurisprudence, proportionality from European practice — and some, most notably the basic structure doctrine, are original contributions of Indian constitutional law that have since been cited by courts in other countries.
Type: ConceptBasic Structure — Parliament may amend any part of the Constitution under Article 368 but cannot damage or destroy its basic structure. Laid down in Kesavananda Bharati v. State of Kerala (1973) by a 13-judge bench, the largest ever constituted, by a 7:6 majority
Severability (or Separability) — if only part of a statute is unconstitutional, only that part is struck down and the rest survives, provided the valid portion can stand on its own. Flows from the words 'to the extent of such inconsistency' in Article 13; in R.M.D.C. v. Union of India (1957) the Court held that severability is a matter of substance and not of form
Eclipse — a pre-Constitutional law inconsistent with a fundamental right is not dead but overshadowed; it becomes inoperative while the inconsistency lasts and revives if the fundamental right is amended to remove the conflict. Bhikaji Narain Dhakras v. State of Madhya Pradesh (1955)
Pith and Substance — when a law's subject appears to straddle two Lists of the Seventh Schedule, the Court looks at its true nature and dominant purpose; incidental encroachment on another legislature's field does not invalidate it. State of Bombay v. F.N. Balsara (1951), following the Privy Council in Prafulla Kumar Mukherjee (1947)
Colourable Legislation — what a legislature cannot do directly, it cannot do indirectly; a law dressed up as being within competence but in substance outside it is void. K.C. Gajapati Narayan Deo v. State of Orissa (1953)
Territorial Nexus — under Article 245(2) a state law is not invalid merely because it has extra-territorial operation, provided there is a sufficient and real connection between the state and the subject matter
Repugnancy — under Article 254, where a state law conflicts with a central law on a Concurrent List subject, the central law prevails and the state law is void to the extent of the repugnancy, unless the state law received Presidential assent. M. Karunanidhi v. Union of India (1979)
Harmonious Construction — where two provisions appear to conflict, the Court reads them so that both are given effect rather than letting one defeat the other; classically used to reconcile Fundamental Rights with Directive Principles
Prospective Overruling — the Court may declare a new legal position that applies only to future cases, leaving past transactions undisturbed. Introduced by Chief Justice Subba Rao in I.C. Golaknath v. State of Punjab (1967)
Waiver — fundamental rights cannot be waived by the person who holds them, because they are conferred as a matter of public policy and not merely for private benefit. Basheshar Nath v. Commissioner of Income Tax (1959)
Manifest Arbitrariness — a law made capriciously, irrationally or without an adequate determining principle violates Article 14 and can be struck down. Shayara Bano v. Union of India (2017), the triple talaq case, reaffirmed in the Electoral Bonds judgment, Association for Democratic Reforms v. Union of India (2024)
Proportionality — a restriction on a right must pursue a legitimate aim, be rationally connected to it, be the least restrictive means available, and be balanced against the harm it causes. Applied in Modern Dental College v. State of M.P. (2016) and K.S. Puttaswamy v. Union of India (2017)
Frequency: Very high — landmark judgments and constitutional doctrines appear in UPSC Prelims almost every year and are a permanent GS-II theme
Most of these doctrines emerged from a single long argument between Parliament and the Supreme Court over the amending power and the right to property, running from the First Amendment to the Emergency and its aftermath.
Shankari Prasad — the Court upholds the First Amendment, holding that 'law' in Article 13 does not include a constitutional amendment
Pith and substance (Balsara), colourable legislation (Gajapati) and severability (R.M.D.C.) are settled in the Court's early federalism and Article 13 cases
Sajjan Singh reaffirms Shankari Prasad, but with dissents that foreshadow a limit on the amending power
Golaknath holds that Parliament cannot abridge fundamental rights, and introduces prospective overruling so that earlier amendments are not disturbed
Kesavananda Bharati overrules Golaknath on the amending power but lays down the basic structure doctrine — a 13-judge bench, 7:6
Indira Nehru Gandhi v. Raj Narain applies basic structure to strike down a constitutional amendment for the first time, on free and fair elections
Minerva Mills strikes down parts of the 42nd Amendment, holding limited amending power and judicial review to be part of the basic structure
The NJAC judgment strikes down the 99th Amendment, holding judicial independence in appointments to be part of the basic structure
Manifest arbitrariness (Shayara Bano) and proportionality (Puttaswamy) become the Court's main tools for testing laws against Articles 14, 19 and 21; manifest arbitrariness is reaffirmed in the Electoral Bonds judgment
| Aspect | Doctrine of Eclipse | Doctrine of Severability |
|---|---|---|
| Question it answers | Is the law operative right now? | Which part of the law survives? |
| Applies mainly to | Pre-Constitutional laws inconsistent with fundamental rights | Any law, pre- or post-Constitutional |
| Effect | The whole law is overshadowed and inoperative, but remains on the statute book | Only the offending portion is struck down; the valid remainder continues to operate |
| Can the law revive? | Yes — if the fundamental right is amended to remove the inconsistency, the eclipse lifts | No revival question arises; the void part is gone unless re-enacted |
| Landmark case | Bhikaji Narain Dhakras v. State of M.P. (1955) | R.M.D.C. v. Union of India (1957) |
| Constitutional anchor | Article 13(1) | Article 13 — 'to the extent of such inconsistency' |
These doctrines are the working machinery of judicial review — the reason a written Constitution has remained workable across seventy-five years of political change. Pith and substance and colourable legislation keep Indian federalism functioning without every overlapping law being struck down. Severability and eclipse prevent the whole statute book from collapsing when one clause offends a fundamental right. Basic structure sets the outer boundary of what an elected majority may do to the constitutional order, and its practical record — the 39th Amendment episode, the 42nd Amendment and the NJAC — is the strongest argument in its favour. Manifest arbitrariness and proportionality are the newest additions and the most active: together they have moved the Court from asking only whether a law was competently made to asking whether it was reasonably made, which is a considerable expansion of judicial power. That expansion is also the standing criticism — none of these doctrines is written down, their contents are stated case by case, and the line between interpreting the Constitution and rewriting it is drawn by the same institution that gains from where it falls.
Article 13
Laws inconsistent with fundamental rights are void to the extent of the inconsistency — the textual source of severability and eclipse
Article 14
Equality before law — the basis of manifest arbitrariness and of reasonable classification
Article 32 and Article 226
Writ jurisdiction of the Supreme Court and High Courts, through which these doctrines are applied
Article 141
The law declared by the Supreme Court is binding on all courts in India — what gives a doctrine binding force
Article 245(2)
Extra-territorial operation of laws — the basis of the doctrine of territorial nexus
Article 246 and the Seventh Schedule
Distribution of legislative powers — the field in which pith and substance and colourable legislation operate
Article 254
Repugnancy between central and state laws on Concurrent List subjects
Article 368
Parliament's amending power, on which the basic structure doctrine places the substantive limit
Basic Structure — Kesavananda Bharati (1973), 13 judges, 7:6; limits Article 368
Severability — R.M.D.C. v. Union of India (1957); only the bad part falls; Article 13
Eclipse — Bhikaji Narain Dhakras (1955); pre-Constitutional law overshadowed, can revive
Pith and Substance — F.N. Balsara (1951); look at the law's true nature, ignore incidental encroachment
Colourable Legislation — K.C. Gajapati Narayan Deo (1953); what cannot be done directly cannot be done indirectly
Prospective Overruling — Golaknath (1967), CJI Subba Rao
Waiver — Basheshar Nath (1959); fundamental rights cannot be waived
Manifest Arbitrariness — Shayara Bano (2017); reaffirmed in Electoral Bonds (2024)
Proportionality — Modern Dental College (2016), Puttaswamy (2017)
Repugnancy — Article 254; Territorial Nexus — Article 245(2); Article 141 makes it all binding
It holds that Parliament may amend any part of the Constitution under Article 368 but cannot damage or destroy its basic structure — features such as supremacy of the Constitution, rule of law, judicial review, federalism and secularism. It was laid down in Kesavananda Bharati v. State of Kerala (1973).
Eclipse asks whether a law is operative — a pre-Constitutional law conflicting with a fundamental right is overshadowed but can revive. Severability asks which part of a law survives — only the unconstitutional portion is struck down.
I.C. Golaknath v. State of Punjab (1967), where Chief Justice Subba Rao applied the new ruling only to future cases so that earlier constitutional amendments were not disturbed.
No. In Basheshar Nath v. Commissioner of Income Tax (1959) the Supreme Court held that fundamental rights cannot be waived, because they are conferred as a matter of public policy and not merely for the individual's private benefit.
No. They are judge-made principles developed through judicial review. Article 141, which makes the law declared by the Supreme Court binding on all courts, is what gives them the force of law.