ne unjuste vexes

from Bouvier's Law Dictionary, Revised 6th Ed (1856)
NE UNJUSTE VEXES, old Eng. law. The name of a writ which issued to relieve 
a tenant upon, whom his lord had distrained for more services than he was 
bound to perform. 
     2. It was a prohibition to the lord, not unjustly to distrain or vex 
his tenant. F. N. B. h.t. 
    

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