The 'cause of action' means every fact which, if traversed, it would be necessary for the Plaintiff to prove in order to support his right to a judgment of the court. In other words, it is a bundle of facts which taken with the law applicable to them gives the Plaintiff a right to relief against the Defendant. The mere service of notice Under Section 52(2) of the Act on the Respondents at their registered office at 18-B, Brabourne Road, Calcutta i.e. within the territorial limits of the State of West Bengal, could not give rise to a cause of action within that territory unless the service of such notice was an integral part of the cause of action. The entire cause of action culminating in the acquisition of the land Under Section 52(1) of the Act arose within the State of Rajasthan i.e. within the territorial jurisdiction of the Rajasthan High Court at the Jaipur Bench. The answer to the question whether service of notice is an integral part of the cause of action within the meaning of Article 226(2) of the Constitution must depend upon the nature of the impugned order giving rise to a cause of action. The notification dated February 8, 1984 issued by the State Government Under Section 52(1) of the Act became effective the moment it was published in the Official Gazette as thereupon the notified land became vested in the State Government free from all encumbrances. It was not necessary for the Respondents to plead the service of notice on them by the Special Officer, Town Planning Department, Jaipur Under Section 52(2) for the grant of an appropriate writ, direction or order Under Article