S. 149 : Reassessment – Time limit for notice – Notice issued beyond three years – Escaped income must be represented in the form of an asset under pre-amended section 149(1)(b) as substituted by Finance Act, 2021 – Alleged bogus purchases are revenue items and not “asset” – Reopening invalid – Assessment quashed – Consequential addition deleted. [S. 144, 143(2), 142(1), 147, 148 , 149(1)(b) ]