S. 153A : Assessment-Search or requisition-Warrant of Authorisation-Panchnama-No search against the assessee-Panchanama reflected the name of the assessee-Panchnama cannot be treated as warrant of authorisation-Assessment order is quashed as without jurisdiction-Existence of alternative remedy-Not bar to entertainment of writ petition where challenge is to jurisdiction exercised by Authority and interpretation of statutory provisions involved-SLP of revenue dismissed. [S. 132,153D, Art.136]