S. 270A: Penalty – Under-reporting of income – Disallowance of employees’ contribution to PF/ESI – Addition already made in intimation u/s 143(1) – No “under-reported income” – Claim based on jurisdictional High Court judgment – Issue debatable – No penalty leviable – Revision u/s 264 maintainable – Commissioner cannot reject revision without reasons – Penalty and revision order quashed. [S. 36(1)(va), 143(1), 143(3), 153A, 264, Art .226 ]