S. 56 :Income from other sources-Income-Search and seizure-Fraudulent Income-tax refunds obtained through bogus challans-Income invested in shares and deposits-Assessee having tangible control and dominion over funds-Taxable on accrual, not merely on receipt-Recovery or repayment in subsequent years cannot negate taxability in year of accrual-Deduction for recovery/repayment not allowable under section 57-Fraudulent income taxable under “Income from other sources-Offences and prosecution-Execution of false challans with intent to defraud Income-tax Department-Revenue authorities directed to take deterrent action permitted by law. [S.2(24), 57, 132, 277 ,Indian Penal Code, 1860, S. 177, 193, 196, 199]