“The said provision makes it clear that a court may, at any stage of the proceedings (including suits for specific performance), either upon or even without any application, and on such terms as may appear to it to be just, direct that any of the following persons may be added as a party: (a) any person who ought to have been joined as plaintiff or defendant, but not added; or (b) any person whose presence before the court may be necessary in order to enable the court to effectively and completely adjudicate upon and settle the question involved in the suit. In short, the court is given the discretion to add as a party, any person who is found to be a necessary party or proper party. A 'necessary party' is a person who ought to have been joined as a party and in whose absence no effective decree could be passed at all by the Court. If a 'necessary party' is not impleaded, the suit itself is liable to be dismissed. A 'proper party' is a party who, though not a necessary party, is a person whose presence would enable the court to completely, effectively and adequately adjudicate upon all matters in disputes in the suit, though he need not be a person in favour of or against whom the decree is to be made. If a person is not found to be a proper or necessary party, the court has no jurisdiction to implead him, against the wishes of the plaintiff. The fact that a person is likely to secure a right/interest in a suit property, after the suit is decided against the plaintiff, will not make such person a necessary party or a proper party to the suit for specific performance.”