law: Companies Act, 1956
  Sec 58    -     Expert's
  
  consent to issue of prospectus containing statement by him. 
  A prospectus inviting persons to subscribe for shares in or
  
  debentures of a company and including a statement purporting to be made by an
  
  expert shall not be issued, unless :
  (a) he has given his written consent to the
  
  issue thereof with the statement included in the form and context in which it
  
  is included, and has not withdrawn such consent before the delivery of a copy
  
  of the prospectus for registration ; and
  (b) a statement that he has given and has not
  
  withdrawn his consent as aforesaid appears in the prospectus.