Section 32
What instruments may be partially cancelled
Chapter V: Cancellation of instruments
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.
The Specific Relief Act, 1963 (Act No. 47 of 1963). From the updated text on India Code, with later amendments. Being checked against the official copy; amendment notes are not shown yet.