A more thorough explanation:

Definition: Res aliena scienter legata is a Latin term that refers to property that a testator did not own but purported to bequeath by will.

Example: John writes a will leaving his neighbor's car to his son. However, John did not own the car, and it belonged to his neighbor. This is an example of res aliena scienter legata.

This term is used in legal contexts to describe situations where a person tries to leave property that they do not own to someone else in their will. It is important to note that this is not a valid way to transfer ownership of property, and the intended recipient will not receive the property in question.