S. 263 : Commissioner-Revision of orders prejudicial to revenue-Income from other sources-Share premium-Discounted Cash flow (DCF) method-Selected for scrutiny on the ground that large share premium received during relevant assessment year-Assessing Officer accepted the claim-Commissioner was not justified in setting aside order of AO under section 263 on ground that AO had merely accepted claim of share premium without making enquiry with respect to valuation of shares. [S. 36(1)(va), 56(2)(viib),142(1), R.11UA]