S. 147 : Reassessment-After the expiry of four years-Survey-Borrowed satisfaction-Reasons cannot be improved or supplemented-No failure to disclose material facts-Assessing Officer cannot rely on various case laws while disposing the objection without furnishing the copies or brining to the notice of the assessee-Notice of reassessment and order disposing the objection was set aside. [S. 133A, 148, Art. 226]