In which case did the Supreme Court explicitly introduce the American concept of 'Due Process of Law' into the interpretation of Article 21, expanding the scope of personal liberty beyond the literal text of 'Procedure Established by Law'?

Explanation

In the Maneka Gandhi case (1978), the Supreme Court overturned its own AK Gopalan (1950) ruling. The court held that the procedure depriving a person of life or personal liberty must be reasonable, fair, and just, thereby reading 'Due Process of Law' into Article 21.