This document contains the landmark Supreme Court judgement in Ajay Hasia v Khalid Mujib. It addresses whether a society registered under the Societies Registration Act can be considered an 'authority' under Article 12 of the Constitution and if its admission procedures are arbitrary, violating Article 14. The judgement provides key tests to determine if an entity is an instrumentality of the state and discusses the principles of equality and non-arbitrariness in administrative actions. This is essential reading for legal professionals, students, and anyone interested in constitutional law.