Procedure in suits involving validity of any statutory instrument. – In any suit in which it appears to the Court that any question as to the validity of any statutory instrument, not being a question of the nature mentioned in rule 1, is involved, the Court shall not proceed to determine that question except after giving notice-
(a) to the Government pleader, if the question concerns the Government, or
(b) to the authority which issued the statutory instrument, if the question concerns an authority other than Government.]
For Complete Code of Civil Procedure, 1908 Bare Act. Click here.