No action shall be commenced by the defendant or his assignee against a garnishee upon any claim or demand liable to garnishment, or to recover any property garnished, or execution be issued upon a judgment in favor of defendant against such garnishee subsequent to the service of the garnishee summons upon him, until the termination of the garnishee action; and if an action shall have been commenced or an execution issued, it shall be stayed by the court or a judge thereof, upon the garnishee's application; except that upon cause shown, the court or a judge may by order permit the commencement of such an action, or the issue of an execution, or the further prosecution of one stayed.