Section 818M(1)(b) in Rules of the High Court of Judicature for Rajasthan, 1952
(b)Where the written statement of the respondent alleges adultery by the petitioner with a named man or woman as the case may be, a certified copy of such statement or such material portion thereof containing such allegations shall be served on such man or woman, accompanied by a notice that such person is entitled within the time therein specified to apply for leave to intervene in the cause.