“........... It cannot be said that when an officer is found guilty in the discharge of his duties, an imposition of penalty is all that is necessary to improve his conduct and to enforce discipline and ensure purity in the administration. In the first instance, the penalty short of dismissal will vary from reduction in rank to censure. The officer cannot be rewarded by promotion as a matter of course even if penalty is other than that of the reduction in rank. An employee has no right to promotion. He has only a right to be considered for promotion. The promotion to a post and more so, to a selection post, depends upon several circumstances. To qualify for promotion, the least that is expected of an employee is to have an unblemished record. That is the minimum expected to ensure a clean and efficient administration and to protect the public interests. An employee found guilty of misconduct cannot be placed on par with the other employees and his case has to be treated differently. There is, therefore, no discrimination when in the matter of promotion, he is treated differently. The least that is expected of any administration is that it does not reward an employee with promotion retrospectively from a date when for his conduct before that date he is penalised in praesenti. When an employee is held guilty and penalised and is, therefore, not promoted at least till the date on which he is penalised,