334. In any inquiry, trial or other proceeding under this Sanhita, a previous conviction or acquittal may be proved, in addition to any other mode provided by any law for the time being in force,-
(a) by an extract certified under the hand of the officer having the custody of the records of the Court in which such conviction or acquittal was held, to be a copy of the sentence or order; or
(b) in case of a conviction, either by a certificate signed by the officer in charge of the jail in which the punishment or any part thereof was undergone, or by production of the warrant of commitment under which the punishment was suffered, together with, in each of such cases, evidence as to the identity of the accused person with the person so convicted or acquitted.
Bharatiya Nagarik Suraksha Sanhita, 2023
Section 331 Affidavit in proof of conduct of public servants
Section 332 Evidence of formal character on affidavit
Section 333 Authorities before whom affidavits may be sworn
Section 334 Previous conviction or acquittal how proved
Section 335 Record of evidence in absence of accused
Section 336 Evidence of public servants, experts, police officers in certain cases
Section 337 Person once convicted or acquitted not to be tried for same offence
Section 338 Appearance by Public Prosecutors
Section 339 Permission to conduct prosecution
Section 340 Right of person against whom proceedings are instituted to be defended