Wikipedia
Zakonopravilo
The Nomocanon of Saint Sava, known in Serbian as Zakonopravilo was the first Serbian constitution and the highest code in the Serbian Orthodox Church, finished in 1219. This legal act was well developed. St. Sava's Nomocanon was the compilation of Civil law, based on Roman law and Canon law, based on Ecumenical Councils and its basic purpose was to organize functioning of the young Serbian kingdom and the Serbian church.