Issues arising in all the present Writ Petitions are purely legal and in all these Writ Petitions the assessees/petitioners have sought relief of quashing of the impugned re-assessment notices issued post 31st March, 2021 by the respondent Income Tax Authority concerned under Section 148 of the Income Tax Act, assessees/petitioners have also sought relief by way of a declaration declaring Explanations A(a)(ii)/A(b) to the Notification No. 20 [S.O. 1432 (E) dated 31st March, 2021 and Notification No. 38 [S.O.1703 (E)] dated 27th April, 2021 to the extent that the same extend the applicability of the “provisions of Section 148, Section 149 and Section 151 of the Act, as the case may be, as they stood as on the 31st March, 2021, before the commencement of the Finance Act, 2021” to the period beyond 31st March, 2021 as ultra vires the parent legislation, viz., The Taxation and Other Laws (Relaxation and Amendment of Certain Provisions) Act, 2020 (hereinafter referred to as ‘ Relaxation Act, 2020’).