The Sum Payable

The sum payable, the expression 'the sum payable' would obviously mean the difference between the amount refunded and the reduced amount which was liable to be refunded. The second reason is that even if it were to be held that in the case of enhancement the expression 'the sum payable' in sub-s. (4) means the whole of the enhanced amount by a rule of harmonious construction it has got to be held that in view of s. 3(1)(a) of the Validation Act even in the case of a rectification a notice of demand is to be served now only in respect of the amount by which the Government dues are enhanced, Union of India v. Jardine Henderson Ltd., AIR 1979 SC 972 (977): (1979) 2 SCC 258: (1979) 3 SCR 555.