This document contains the full judgement from the Supreme Court of India in the case of Karnail Singh vs. State of Haryana, dated 29 July 2009. It addresses crucial aspects of the Narcotic Drugs and Psychotropic Substances (NDPS) Act, 1985, particularly concerning the procedural requirements for search, seizure, and arrest under Section 42. The judgement clarifies the mandatory nature of certain provisions and their impact on prosecution cases, offering valuable insights for legal practitioners and those studying criminal law.