Section 280(h) in Police Regulations, Bengal , 1943
(h)Care should be taken that the witnesses are, so far as possible, unconnected with any of the parties concerned or with the police, so that they may be regarded as quite independent. Whenever possible, the presence of the Panchayat or headman of the village shall be obtained to witness a search. Under no circumstances should a spy or habitual drunkard or any one of doubtful character be called as a search witness. Reasons for rejecting any person as a witness to the search should be noted in the case diary.