No penalty if estimated addition made during block assessment wasn’t based on materials found during

IT: Where Assessing Officer passed penalty order under section 158BFA taking a view that undisclosed income assessed in case of assessee was in excess to undisclosed income shown in return of income, in view of fact that addition sustained remained only on estimate basis on account of gross profit on sales outside books of account and not on basis of any material found in possession of assessee during search proceedings, impugned penalty order was to be set aside