Which of the following Court cases, provided clarity on what procedure means under Article 21?

M.C. Mehta v. Union of India M.H. Hoskot v. State of Maharashtra Maneka Gandhi v. Union of India Indira Gandhi v. State of U.P.

Maneka Gandhi v. Union of India

Maneka Gandhi v. Union of India (AIR 1978 SC 597) provided clarity on what procedure means under Article 21. The right to life or liberty could be violated only by a fair, just and reasonable procedure.