S. 147 : Reassessment-After the expiry of four years-Disallowance under section 14A already deleted in assessee’s own case-No failure to disclose material facts-Reassessment invalid-Speculative transactions-No addition made on issue forming basis of reopening-Addition on other issues not permissible-Reassessment invalid. [S.14A,40A(2)(b), 43(5), 73 148, R. 8D]