Section 18C

The decision of a political party or any person authorized by it or by its constitution or rules or regulations made under the constitution on the interpretation of its constitution, rules or regulations or on any matter relating to the affairs of the party shall be final and conclusive and such decision shall not be challenged, appealed against, reviewed, quashed or called in question in any court on any ground, and no court shall have jurisdiction to entertain or determine any suit, application, question or proceedings on any ground regarding the validity of such decision.