Quaestus

That estate which a man has by acquisition or purchase, in contradistinction to "haereditas," which is what he has by descent.

Glanv. 1, 7, c. 1.

QUALE JUS (Lat.) In old English law. A judicial writ, which lay where a man of religion had judgment to recover land before execution was made of the judgment. It went forth to the escheator between judgment and execution, to inquire what right the religious person had to recover, or whether the judgment were obtained by the collusion of the parties, to the intent that the lord might not be defrauded.

Reg. Jud. 8.