S. 147 : Reassessment-Internal audit objection-Reimbursement of expenses-Failure to deduct tax at source-Reassessment is held to be not valid-90 days time period permitted under Rule 34(5) for pronouncing order was to be computed by deducting Covid-19 pandemic lockdown period. [S. 40(a)(ia), 148, 195, 255, ITATR. 34(5)]