IPC 497: Adultery: Whoever has sexual intercourse with a person who is and whom he knows or has reason to believe to be the wife of another man, without the consent or connivance of that man, such sexual intercourse not amounting to the offence of rape, is guilty of the offence of adultery, and shall be punished with imprisonment of either description for a term which may extend to 5 years, or with fine, or with both. In such case, the wife shall not be punishable as an abettor.

(Comments: This Code is important for medical professionals not only as doctors but also for their personal life as it defines adultery in detail).