S. 40(a)(ia) : Amounts not deductible-Deduction at source-Interest paid to resident–Failure to deduct tax at source-recipient has shown as income-Second proviso to section 40(a)(ia) inserted by Finance (No. 2) Act, 2004, with effect from 1-4-2005 is curative and has retrospective effect- No disallowances can be made. [S. 201]