under the prevailing rules/regulation, pertaining to grant of promotion to the petitioner herein. Moreover, the Director, Department of Higher Education, Government of Bihar, vide letter dated 26.09.2012 had issued specific directions whereby the State Government had strictly prohibited granting promotion to the Class-IV employees on the Class-III post, hence in such view of the matter, as well, the alleged promotion of the petitioner could not have been approved by the University, in absence of any challenge or annulment of the said order dated 26.09.2012. Thus, this Court cannot issue any mandamus directing the University to grant approval of illegal promotion granted to the petitioner by the then Principal of the college in question on the Class-III post, in anticipation of approval by the University. Now coming to the case of Himanshu Shekhar Jha (supra), relied upon by the learned counsel for the petitioner, it would suffice to state here that the same is clearly distinguishable from the fact and and circumstances of the present case inasmuch as in the said case the salary of the incumbent had been fixed under the orders of the Government against the Class-III post and thereafter the promotion of the said incumbent had been cancelled by the University, whereas in the present case neither there is any