S.14A: Disallowance of expenditure-Exempt income-Book profits-Computation-Assessee’s suo motu disallowance-Further disallowance in computation of book profits under section 115JB unjustified-Addition deleted-Disallowance where entire investment made out of interest-free own funds-No disallowance warranted-CBDT Circular No. 5 of 2014 cannot override express provisions of section 14A-Disallowance not legally tenable-Effect of Explanation inserted by Finance Act, 2022 with effect from 1-4-2022-Amendment prospective, not retrospective-Disallowance for earlier year not tenable-Suo motu disallowance-Assessee’s own interest-free funds in excess of investment-No disallowance warranted-Assessing Officer required to record dissatisfaction with correctness of suo motu disallowance-Non-recording of satisfaction precluding recourse to rule 8D-No further disallowance warranted. [S. 115JB, R. 8D]