The Specific Relief Act,1963
Section 37. Temporary and perpetual injunctions
(1) Temporary injunction is such as are to continue until a specific time, or until the further order of Civil Procedure, may be granted at any stage of a suit, and are regulated by the Code of Civil Procedure,1908.
(2) A perpetual injunction can only be granted by the decree made at the hearing and upon the merits of the suit; the defendant is thereby perpetually enjoined from the assertion of a Tight, or from the commission of an act, which would be contrary to the rights of the plaintiff.