In which of the following Supreme Court judgments was talaq-e-biddat (instant triple talaq) held invalid?

The 22 August 2017 common judgment disposed of Shayara Bano's petition together with connected petitions, including Gulshan Parveen's. A three-judge majority invalidated instant triple talaq; the judges reached that result through differing reasons, including manifest arbitrariness and inconsistency with the Quran. Both named petitions formed part of the adjudication.

Current law: An ordinance had already addressed instant triple talaq from 19 September 2018. It was later replaced by the Muslim Women (Protection of Rights on Marriage) Act 2019, deemed effective from that date, declaring such pronouncements void and illegal and providing criminal punishment.