Nulle terre sans seigneur

In feudal law, nulle terre sans seigneur (French for "no land without (a) lord", pronounced [nyl tɛʁ sɑ̃ sɛɲœʁ]) is the principle that one provides services to the sovereign (usually serving in his army) for the right to receive land from the sovereign. Originally a maxim of feudal law, it applies in modern form to paying rates or land tax for land of former feudal or feudal-like origin such as land with modern fee simple title, as opposed to land with allodial or udal title.

Source: Wikipedia — Nulle terre sans seigneur (CC BY-SA 4.0)