be not applicable, it is found that the distinguishing feature in the case of Jagdev Singh (supra) was that unlike in the case of Rafiq Masih (supra), the employee from which the recovery was sought to be made was not either Class-III or Class-IV employee, but was an Additional Civil Judge. That apart, the employee, Jagdev Singh was clearly placed on notice that any payment found to have been made in excess, would be required to be refunded. To that effect, the officer had also furnished an undertaking for refund while opting for the revised pay-scale, which was not the case in Rafiq Masih (supra) . It was on the above distinguishing features in the case of Jagdev Singh (supra) that the Supreme Court has held that the proposition enunciated in the case of Rafiq Masih (supra) will not be applicable therein.