In 1349 Stefan Dušan enacted a code that was part of a tripartite codification with the Abridged syntagma and the so-called Law of Justinian. The Serbian emperor introduced in his empire a Byzantine legal system, even if elements of Slavic customary law were preserved. Physical mutilations and punishments, death penalty, public penal system, personal liability were unknown to the Slav populations and have to be connected to the Greek-Roman law influence. This influence is evident both in civil and criminal law and in this sense the dispositions of the Code of Dušan must be connected to the two other Byzantine compilations. Dušan's attempt failed just a few years after his death because of the fall of the Serbian empire due to the Ottoman advance.