16. The decision in the case of Eicher Motors Limited and Another (supra) is distinguishable, for in the said case, what was subject matter of challenge was Rule 57-F(4-A), which had stipulated that unutilized credit as on 16th March, 1995 lying with the manufacturers of tractors under Heading 87.01 or motor vehicles 87.02 and 87.04 or chassis of tractors or motor vehicles under Heading 87.06 shall lapse and shall not be allowed to be utilized for payment of duty on excisable goods. The proviso, however, had stipulated that nothing shall apply to the credit of duty, if any, in respect of inputs lying in stock or contained in finished products lying in stock as on 16th March, 1995, thereby creating an anomalous situation. Credit of tax paid on inputs and even finished products was available, but not in respect of the sold products. This was clearly taking away a vested right in the form of an amendment to the Rule. There was lapse of credit, which could not be utilized, though the tax/duty had not been withdrawn. The Supreme Court noticed that the credit attributable to inputs had already been used in manufacture of final products that had been cleared, and this alone was sought to be lapsed, notwithstanding the fact that the right had become absolute. On a holistic reading of the entire scheme, it was observed that when acts have been done by the parties concerned on the strength of the Rules, incidence following thereto must take place in accordance with the scheme or the Rules, otherwise it would affect the rights of the assessees. Further, right had accrued on the date when
