S. 148 : Reassessment – Notice – Constitutional validity – Taxation and other Laws (Relaxation and Amendment of Certain Provisions) Act, 2020 – CBDT’s notification No. 20/2021, dated 31-03-2021 – Notice issued under old provisions of section 148 on or after 1-4-2021- , Notice was issued to revenue and Attorney General of India- Order passed staying the proceedings till next date of hearing . [ S. 147, 148A, 149, TLA Act, 2020 , S. 3 , Art , 226 ]