Parties and roles: Shayara Bano is the petitioner who initiated or carried the matter to the Supreme Court. Union of India & Ors. is the respondent opposing the relief or defending the challenged action, decision, law or proceeding. The labels “plaintiff” and “defendant” are generally not used here because this is a constitutional writ proceeding. Talaq-e-biddat allowed a Muslim husband to end marriage immediately by pronouncing talaq three times, without reconciliation or a waiting process. Women argued that the unilateral and irrevocable practice left them suddenly without marital security or meaningful remedy. The Court had to navigate personal law, religious freedom, gender justice and the extent to which a practice could be reviewed under fundamental rights. Procedural and real-world context: 2016: Shayara Bano challenged talaq-e-biddat after her husband pronounced instant triple talaq. | Multiple petitions and interventions were consolidated. In simple terms, the Court had to resolve is talaq-e-biddat protected as an essential religious practice? Is it 'law' subject to fundamental-rights review? Is it manifestly arbitrary under Article 14? The outcome mattered immediately because by 3:2, instant triple talaq was invalidated. Nariman and Lalit JJ. Procedural setting: 2016: Shayara Bano challenged talaq-e-biddat after her husband pronounced instant triple talaq. | Multiple petitions and interventions were consolidated. | 22 Aug 2017: Practice invalidated by 3:2 majority. | 2019: Parliament enacted legislation prohibiting instant triple talaq. The central problem before the Court was is talaq-e-biddat protected as an essential religious practice? Is it 'law' subject to fundamental-rights review? Is it manifestly arbitrary under Article 14? The controversy was considered in the framework of Muslim Personal Law (Shariat) Application Act, 1937, s.2; later Muslim Women (Protection of Rights on Marriage) Act, 2019, together with Constitution arts.13, 14, 15, 21, 25 and 44. The wider importance of the case lies in manifest arbitrariness; gender justice; essential religious practice; constitutional morality; personal-law review.

Petitioners: instant triple talaq was arbitrary, discriminatory, non-essential to Islam and contrary to Quranic procedure and dignity. | Personal-law board/opponents: personal law and essential religious practices were constitutionally protected; reform should come from the legislature, not judicial review. Competing positions in context: Shayara Bano's position: as the petitioner, Shayara Bano sought the relief indicated by the questions of law and challenged the opposing action or interpretation. The claim was that the Court should apply the governing provisions consistently with Manifest arbitrariness; gender justice; essential religious practice; constitutional morality; personal-law review. Union of India & Ors.'s position: as respondent, Union of India & Ors. resisted that relief, defended the impugned measure or decision, or proposed a narrower interpretation of the Court's power and the applicable law. The Court therefore had to test these submissions against Muslim Personal Law (Shariat) Application Act, 1937, s.2; later Muslim Women (Protection of Rights on Marriage) Act, 2019 and Constitution arts.13, 14, 15, 21, 25 and 44, the record of the proceedings and binding precedent. This summary states the principal controversy in accessible language; the official judgment remains authoritative for counsel-specific submissions and paragraph references.

By 3:2, instant triple talaq was invalidated. Nariman and Lalit JJ. treated the 1937 Act as recognizing the practice and struck it down as manifestly arbitrary under Article 14. Kurian Joseph J. held that what is sinful and contrary to the Quran cannot be valid in Shariat. The Chief Justice and Nazeer J. dissented, viewing it as protected personal law while urging legislative reform. Effect of the decision: the ruling explains or applies Manifest arbitrariness; gender justice; essential religious practice; constitutional morality; personal-law review and binds the parties to the operative directions made in W.P.(C) No. 118/2016 and connected matters. It also guides lower courts and public authorities on materially similar questions under Muslim Personal Law (Shariat) Application Act, 1937, s.2; later Muslim Women (Protection of Rights on Marriage) Act, 2019. Scope and caution: only the ratio decidendi and operative directions of the signed judgment are binding; summaries should not be treated as substitutes for the judgment, separate opinions, later review orders or subsequent precedent.

Muslim Personal Law (Shariat) Application Act, 1937, s.2; later Muslim Women (Protection of Rights on Marriage) Act, 2019

Constitution arts.13, 14, 15, 21, 25 and 44

Manifest arbitrariness; gender justice; essential religious practice; constitutional morality; personal-law review