law: Court Fees Act, 1850 
  20.Effect of acknowledgment or payment by another person .- 
  (1) The expression "agent duly authorized in this
  
  behalf" in sections 18 and 19 shall, in the case of a person under
  
  disability, include his lawful guardian, committee or manager or an agent duly
  
  authorized by such guardian, committee or manager to sign the acknowledgment or
  
  make the payment.
  (2) Noting in the said sections renders one of several joint
  
  contractors, partners, executors or mortgagees chargeable by reason only of a
  
  written acknowledgment signed by, or of a payment made by, or by the agent of,
  
  any other or others of them.
  (3) For the purposes of the said sections,--
  (a) an acknowledgment signed or a payment made
  
  in respect of any liability by, or by the duly authorized agent of, any limited
  
  owner of property who is governed by Hindu law, shall be a valid acknowledgment
  
  or payment, as the case may be, against a reversioner 
  
  succeeding to such liability; and
  (b) where a liability has been incurred by, or
  
  on behalf of a Hindu undivided family as such, an acknowledgment or payment
  
  made by, or by the duly authorized agent of, the manager of the family for the
  
  time being shall be deemed to have been made on behalf of the whole family.