Section 31 in The Specific Relief Act, 1963
Title: When cancellation may be ordered.
(1) Any person against whom a written instrument is void or voidable, and who has reasonable apprehension that such instrument, if left outstanding may cause him serious injury, may sue to have it adjudged void or voidable; and the court may, in its discretion, so adjudge it and order it to be delivered up and cancelled.
(2) If the instrument has been registered under the Indian Registration Act, 1908 (16 of 1908), the court shall also send a copy of its decree to the officer in whose office the instrument has been so registered; and such officer shall note on the copy of the instrument contained in his books the fact of its cancellation.
Title: What instruments may be partially cancelled.
Where an instrument is evidence of different rights or different obligations, the court may, in a proper case, cancel it in part and allow it to stand for the residue.
Title: Power to require benefit to be restored or compensation to be made when instrument is cancelled or is successfully resisted as being void or voidable
(1) On adjudging the cancellation of an instrument, the court may require the party to whom such relief is granted, to restore, so far as may be any benefit which he may have received from the other party and to make any compensation to him which justice may require.
(2) Where a defendant successfully resists any suit on the ground—
(a) that the instrument sought to be enforced against him in the suit is voidable, the court may if the defendant has received any benefit under the instrument from the other party, require him to restore, so far as may be, such benefit to that party or to make compensation for it;
(b) that the agreement sought to be enforced against him in the suit is void by reason of his not having been competent to contract under section 11 of the Indian Contract Act, 1872 (9 of 1872), the court may, if the defendant has received any benefit under the agreement from the other party, require him to restore, so far as may be, such benefit to that party, to the extent to which he or his estate has benefited thereby.
Title: Discretion of court as to declaration of status or right.
Any person entitled to any legal character, or to any right as to any property, may institute a suit against any person denying, or interested to deny, his title to such character or right, and the court may in its discretion make therein a declaration that he is so entitled, and the plaintiff need not in such suit ask for any further relief:
Provided that no court shall make any such declaration where the plaintiff, being able to seek further relief than a mere declaration of title, omits to do so.
Explanation.--A trustee of property is a "person interested to deny" a title adverse to the title of some one who is not inexistence, and for whom, if in existence, he would be a trustee.
Title: Effect of declaration.
A declaration made under this Chapter is binding only on the parties to the suit, persons claiming through them respectively, and, where any of the parties are trustees, on the persons for whom, if in existence at the date of the declaration, such parties would be trustees.