Introduction The principle of "no crime and no punishment without a law" is one of the foundational pillars of criminal justice systems worldwide. It serves as the primary legal safeguard protecting individuals from arbitrary treatment and injustice. This principle clearly defines when an act can be considered a crime and when a punishment can be imposed, thus reinforcing the rule of law and preventing legal chaos. This article explores the significance of this principle, its origins, applications in different legal systems, its compatibility with Islamic law, and the challenges it faces in the modern era. 1. The Concept of Legality in Crime and Punishment The principle of legality in crime and punishment is the cornerstone of modern criminal justice systems. It aims to set clear boundaries for what constitutes criminal behavior and what sanctions apply. It protects individuals from punishment unless there is a clear, specific law defining the criminal act and the correspondi...
