In the year 1996 property purchased through agreement of sale and total consideration amount paid, subsequently the document vendor (A) not avilable the purchaser (B) validated/impounded that document before the district registrar, therafter he sold to X under registered sale deed, again X sold to Y under registered AGPA with possession, after that Y sold the same to Z under registered sale deed and Z is in possession of the property as an today. In the year 2006 the some LRS of the A (Vendor) filed the declaration suit against the B, X, Y, Z. stating that the Agreement of Sale is not executed his father and the original title deed are misplased in the year 2006 ?
I am representing Z in the above suit, kindly give any citations to prove that validated/impounded document is legally valid document under the registrarion act.