S. 263 : Commissioner-Revision of orders prejudicial to revenue-Cash credits-share capital-Share premium-Principal Commissioner had to examine all records pertaining to assessment year at time of examination by him, which included, post-search assessment proceedings and thereafter only if he found that order passed by Assessing Officer on any issue was erroneous insofar as it was prejudicial to interest of revenue-Order of Tribunal quashing the revision order was affirmed-SLP of revenue was dismissed as the revenue court not explain the delay of 646 days in filing SLP. [S. 68, 153A, Art. 136]