S. 147 : Reassessment-With in four years-Cash credits-Shell Companies-Information from Investigation Wing-Recorded reason mechanical manner without application of mind by the Assessing Officer-Mistake-A mistake, which can be corrected under section 292B, should be such that if excised it does not change tenor and scope of documents/proceedings referred to therein-Order of Tribunal quashing the reassessment order is affirmed-No substantial question of law.[S. 68, 143(1), 148, 260A, 292B]