“34. … But suffice it to say that the core of all the decisions of this Court is to the effect that the voluntary nature of any statement made either before the Custom Authorities or the officers of the Enforcement under the relevant provisions of the respective Acts is a sine qua non to act on it for any purpose and if the statement appears to have been obtained by any inducement, threat, coercion or by any improper means then statement must be rejected brevimanu. At the same time, it is to be noted that merely because a statement is retracted, it cannot be recorded as involuntary or unlawfully obtained. It is only for the maker of the statement who alleges inducement, threat, promise, etc. to establish that such improper means has been adopted. However, even if the maker of the statement fails to establish his allegations of inducement, threat, etc. against the officer who recorded the statement, the authority while acting on the inculpatory statement of the maker is not completely relieved of its obligations in at least subjectively applying its mind to the subsequent retraction to hold that the inculpatory statement was not extorted. It thus boils down that the authority or any court intending to act upon the inculpatory statement as a voluntary one should apply its mind to the retraction and reject the same in writing . It is only on this principle of law, this Court in several decisions has ruled that even in passing a detention order on the basis of an inculpatory statement of a detenu who has violated the provisions of the FERA or the Customs Act, etc. the detaining authority should consider the subsequent retraction and record its opinion before accepting the inculpatory statement lest the order will be vitiated. ”