law: Indian Evidence Act, 1872 
  18. Admission- by party to proceeding or his agent 
  Statements made by
  
  party to the proceeding, or by an agent to any such party, whom the Court regards,
  
  under the circumstances of the case, as expressly or impliedly authorized by
  
  him to make them, are admissions.
  By suitor in
  
  representative character — Statements made by parties to suits, suing or sued
  
  in a representative character, are not admissions, unless they are made while
  
  the party making them held that character.
  Statements made by—
  (1) By party
  
  interested in subject-matter—persons who have any proprietary or pecuniary
  
  interest in the subject-matter of the proceeding, and who make the statement in
  
  their character of persons so interested, or
  (2) By person from
  
  whom interest derived- Persons from whom the parties to the suit have derived
  
  their interest in the subject-matter of the suit, are admissions, if they are
  
  made during the continuance of the interest of the persons making the
  
  statements.