This document contains the full judgement of the Supreme Court of India in the case of State of Punjab vs Balbir Singh, dated 1 March 1994. It addresses the crucial legal question of whether arrests, searches, and seizures conducted without strict adherence to the Narcotic Drugs and Psychotropic Substances (NDPS) Act, 1985, render the proceedings illegal. This judgement is vital for legal practitioners, law students, and anyone involved in cases related to drug trafficking and search and seizure procedures under the NDPS Act.