When any judge or magistrate is accused of any offence while in discharge of his official duty,

Section 197 CrPC - Prosecution of Judges and public servants.—(1) When any person who is or was a Judge or Magistrate or a public servant not removable from his office save by or with the sanction of the Government is accused of any offence alleged to have been committed by him while acting or purporting to act in the discharge of his official duty, no Court shall take cognizance of such offence except with the previous sanction— (a) in the case of a person who is employed or, as the case may be, was at the time of commission of the alleged offence employed, in connection with the affairs of the Union, of the Central Government; (b) in the case of a person who is employed or, as the case may be, was at the time of commission of the alleged offence employed, in connection with the affairs of a State, of the State Government