According to us, it would be incorrect to look at the delegation legislation i.e. Notification dated 31.03.2021 issued under the Enabling Act, to interpret the principal legislation made by Parliament, being the Finance Act, 2021. A delegated legislation can never overreach any Act of the principal legislature. Second, it would be over simplistic to ignore the provisions of, either the Enabling Act or the Finance Act, 2021 and to read and interpret the provisions of Finance Act, 2021 as inoperative in view of the fact circumstances arising from the spread of the pandemic COVID-19. Practicality of life de hors statutory provisions, may never be a good guiding principle to interpret any taxation law. In absence of any specific clause in Finance Act, 2021, either to save the provisions of the Enabling Act or the Notifications issued thereunder, by no interpretative process can those Notifications be given an extended run of life, beyond 31 March 2020. They may also not infuse any life into a provision that stood obliterated from the statute with effect from 31.03.2021. Inasmuch as the Finance Act, 2021 does not enable the Central Government to issue any notification to reactivate the pre-existing law (which that principal legislature had substituted), the exercise made by the delegate/Central Government would be de hors any statutory basis. In absence of any express saving of the pre-existing laws, the presumption drawn in favour of that saving, is plainly impermissible. Also, no presumption exists that by Notification issued under the Enabling Act, the operation of the pre-existing provision of the Act had been extended and thereby provisions of Section 148A of the Act (introduced by Finance Act 2021) and other provisions had been deferred. Such Notifications did not insulate or save, the pre-existing provisions pertaining to reassessment under the Act.