“35. Drawing the sample and sealing the same are acts within the exclusive province of the Police official or the Excise official concerned. The learned Magistrate undertaking the act of taking the sample from the contraband himself is irreconcilable. The water-tight compartments provided for the investigator and the court in a criminal prosecution cannot, at any rate, be allowed to be traversed or interchanged. It is pertinent to note that the detecting officer, after investigation, is to file the final report before the Magistrate. If the Magistrate himself undertakes the act of taking the sample from the contraband produced before him, the question of independent consideration of final report laid by the investigating officer before the learned Magistrate,