S. 263 : Commissioner-Revision of orders prejudicial to revenue–Survey – Admission of additional income-Assessment order was passed without enquiry—Revision is held to be valid-Central Board of Direct Taxes is directed to issue necessary instructions to all the Assessing Officers in cases of search and seizure or where survey operations have been carried out by the Department and surrender made or concealed income detected, to ensure proper scrutiny of such cases and discuss reasons for rejecting or accepting the books of account of the assessee and not to merely record in slipshod or cursory manner that “the books of account produced and test checked” as done by the Assessing Officer. [S.119, 132, 133A]