Taking cognizance of the petition submitted by the Nitish Kumar faction of the JD-U for disqualification of party leaders Sharad Yadav and Ali Anwar Ansari on grounds of defection, the Rajya Sabha Secretariat has issued show cause notice to the two leaders.<br/><br/>The notice, issued on Wednesday, has asked the rebel Janata Dal United (JD-U) leaders to appear before the Rajya Sabha Chairman on October 30 in his chamber at Parliament to present their case.<br/>'<br/>While Mr Ansari is set to retire in April next year, Mr Yadav's term will end in 2022, if not disqualified. <br/>'<br/>The two MPs had broken away from Bihar Chief Minister Nitish Kumar after he severed ties with coalition partner RJD and went to the BJP-led National Democratic Alliance fold in July this year.