A division bench at Allahabad High Court held as follows:

From Para 16,

16. According to own case of the petitioners, the petitioner no.1 is still a legally wedded wife of one Mahesh Chandra. As per own alleged application dated 17.09.2020 (as reproduced in para 6 above), the petitioners are living as husband and wife and they have sought protection from interference in their living together as husband and wife. Once the petitioner No.1 is a married woman being wife of one Mahesh Chandra, the act of petitioners particularly the petitioner No.2, may constitute an offence under Sections 494/495 I.P.C. Such a relationship does not fall within the phrase “live-in-relationship” or “relationship in the nature of marriage”. The writ petition has been filed by the petitioners for protection from interference by others in their living as husband and wife. If the protection as prayed is granted, it may amount to grant protection against commission of offences under Sections 494/495 I.P.C.

From Para 18,

18. It is settled law that writ of mandamus can be issued if the petitioner has a legal right to the performance of a legal duty by the party against whom the mandamus is sought and such right must be subsisting on the date of the petition. Similar view has also been taken by Hon’ble Supreme Court in Kalyan Singh vs. State of U.P. 13. Applying the principles of issuance of writ of mandamus on the facts of the present case, we find that the petitioners have no legal right for protection on the facts of the present case inasmuch as such the protection as being asked, may amount to protection against commission of offence under Section 494/495 I.P.C. It is well settled law that writ of mandamus can not be issued contrary to law or to defeat a statutory provision including penal provision. The petitioners do not have legally protected and judicially enforceable subsisting right to ask for mandamus.