law: Specific Relief Act, 1963
  13. Rights of purchaser or lessee against person with no
  
  title or imperfect title
  (1) Where a person contracts to sell or let certain immovable
  
  property having no title or only an imperfect title, the purchaser or lessee
  
  (subject to the other provisions of this Chapter), has the following rights,
  
  namely,-
  (a) if the vendor or lessor has subsequently
  
  to the contract acquired any interest in the property, the purchaser or lessee
  
  may compel him to make good the contract out of such interest;
  (b) where the concurrence of other persons is
  
  necessary for validating the title, and they are bound to concur at the request
  
  of the vendor or lessor, the purchaser or lessee may compel him to procure such
  
  concurrence, and when a conveyance by other persons is necessary to validate
  
  the title and they are bound to convey at the request of the vendor or lessor,
  
  the purchaser or lessee may compel him to procure such conveyance;
  (c) where the vendor professes to sell
  
  unencumbered property, but the property is mortgaged for an amount not
  
  exceeding the purchase money and the vendor has in fact only a right to redeem
  
  it, the purchaser may compel him to redeem the mortgage and to obtain a valid
  
  discharge, and, where necessary, also a conveyance from the mortgagee;
  (d) where the vendor or lessor sues for
  
  specific performance of the contract and the suit is dismissed on the ground of
  
  his want of title or imperfect title, the defendant has a right to a return of
  
  his deposit, if any, with interest thereon, to his costs of the suit, and to a
  
  lien for such deposit, interest and costs on the interest, if any, of the
  
  vendor or lessor in the property which is the subject-matter of the contract.
  (2) The provisions of sub-section (1) shall also apply, as far
  
  as may be, to contracts for the sale or hire of movable property.