In feudal law, Nulle terre sans seigneur is the principle that one provides services to the sovereign

Sovereignty

Sovereignty is the quality of having supreme, independent authority over a geographic area, such as a territory. It can be found in a power to rule and make law that rests on a political fact for which no purely legal explanation can be provided...

 (usually serving in his army

Army

An army An army An army (from Latin arma "arms, weapons" via Old French armée, "armed" (feminine), in the broadest sense, is the land-based military of a nation or state. It may also include other branches of the military such as the air force via means of aviation corps...

) for the right to receive land from the sovereign.

In the original French

French language

French is a Romance language spoken as a first language in France, the Romandy region in Switzerland, Wallonia and Brussels in Belgium, Monaco, the regions of Quebec and Acadia in Canada, and by various communities elsewhere. Second-language speakers of French are distributed throughout many parts...

 the expression means "No land without a lord" though the legal sense might be more "no property without a liege" since it was at the basis of the link between the infeodated or feal

Nobility

Nobility is a social class which possesses more acknowledged privileges or eminence than members of most other classes in a society, membership therein typically being hereditary. The privileges associated with nobility may constitute substantial advantages over or relative to non-nobles, or may be...

 and his liege

Allegiance

An allegiance is a duty of fidelity said to be owed by a subject or a citizen to his/her state or sovereign.-Etymology:From Middle English ligeaunce . The al- prefix was probably added through confusion with another legal term, allegeance, an "allegation"...

.