nemo dat
/ˌniːməʊˈdæt/(全称nemo dat quod non habet)
noun
- Law the basic principle that a person who does not own property, especially a thief, cannot confer it on another except with the true owner's authority【律】自己没有的东西不可能给人。
词源
Latin, literally 'no one gives (what he or she does not have)'.