Section 818M(1)(a) in Rules of the High Court of Judicature for Rajasthan, 1952
(a)Where the husband is charged with adultery with a named female person, a certified copy of pleading or material portion thereof containing such charge shall be served upon the person with whom adultery is alleged to have been committed, accompanied by a notice that such person is entitled within the time therein specified to apply for leave to intervene in the cause.