S. 153C: Search and seizure-Assessment of third person-Satisfaction note-Must state with reference to information from seized material its relevance to assessee’s income-Assessee’s business not commenced-No question of turnover being suppressed-Seized documents bearing no reference to turnover-Satisfaction note issued without application of mind-Approval under section 153D also invalid-Assessments not sustainable. [S. 69C, 153A, 153D]