83. Whoever, dishonestly or with a fraudulent intention, goes through the ceremony of being married, knowing that he is not thereby lawfully married, shall be punished with imprisonment of either description for a term which may extend to seven years, and shall also be liable to fine.
Bharatiya Nyaya Sanhita, 2023
Section 83: Marriage ceremony fraudulently gone through without lawful marriage
Chapter V — Of Offences Against Woman and Child
Source: official text of the Bharatiya Nyaya Sanhita, 2023 (Ministry of Home Affairs).