A perusal of the above Rule would show that the benefit of pension and other benefits would be applicable only to those employees, who superannuate or retire after completion of minimum 10 years of service. Since the Rule itself lays down that it is on superannuation or retirement of an employee, who completed minimum 10 years of service, such benefit can be granted to him, the claim of the petitioners as made in the present petition relying on the said Rule is misplaced. In the light of the Rule 7.5 of Punjab Civil Services Rules, as applicable to the State of Haryana, on resignation the service rendered by an employee stands forfeited and therefore, the claim as made by the petitioners on this ground also can not be sustained. The judgment passed by this Court in Mehar Singh's case (supra) being contrary to the statutory rules and the mandate therein cannot be made applicable in the present petition for claiming the benefit, which the statutory rules do not permit and therefore, the same cannot be treated as a binding precedent to be followed. The statutory rules are to be given preference and adhered to unless they are ultra vires the constitution. The Court in the exercise of writ