According to the Penal Code of 1960, criminal laws purportedly based on sharīʿa ceased to exist in Northern Nigeria. In 2000, twelve states of Northern Nigeria sought to reintroduce Islamic criminal law, which had been partially in place prior to the 1960 law reforms. Besides the enactment of penal codes, these states enacted several laws designed to address “social vices.” According to these laws, social vices included corruption, nepotism, tribalism, abuse of public office and position, drunkenness, cheating, fornication, and armed robbery, among others. This volume of Philip Ostien’s Sharīʿa Implementation Sourcebook includes these anti-vice laws.