law: The Commissions of Inquiry Act, 1952
  6. Statements made by persons to the Commission.-
  No statement made by a person in the course of giving evidence before the Commission shall subject him to, or be used against him in, any civil or criminal proceeding except a prosecution for giving false evidence by such statement:
  Provided that the statement-
  (a) is made in reply to a question which he is required by the Commission to answer, or
  (b) is relevant to the subject matter of the inquiry.