The rules, laws, court decisions and principles compiled in the have been influenced by much older (provincial) Roman law principles. The served as a model for law books in
German (
Middle High German) like the , the , and the . The
Duchy of Saxony covered most of what nowadays is the northwestern part of Germany and eastern part of the
Netherlands, but the rules spread more widely. The state of
Utrecht, for instance, in 1632 knew the rule "Who comes first, grinds first", as published in the , a collection of decisions, rulings and local laws. The rule that married women stood under the custody of their husband, meaning that they could legally not act and had no say in juridical or childraising matters, was a rule of law in the Netherlands until 1956, in Belgium until 1958. In
Prussia, the was used until the introduction of the [General Land Law for the Prussian States] in 1794. In Saxony, it was used until the introduction of the Saxon Civil Code in 1865. In
Anhalt and
Thuringia, the was not replaced until the introduction of the
German Civil Code in 1900. Its precedents continued to be cited as pertinent
case law as recently as 1932 by the (Supreme Court of the Reich) (RGZ 137, 373). The influence of the , or at least parallels with it, can still be found in modern German and Dutch law, for instance in inheritance law, the law of neighborly relations (; e.g., nuisance, party walls, etc.) or
usufructuary rights. The is also important because, for the first time in history, the institution of slavery itself is condemned, because it is a violation of man's likeness to God. The contains two branches of law: common law and feudal law. ==Saxon custom==