'' Any Land Customs Officer, duly empowered by the Chief Customsauthority in this behalf, may require any person in charge of any goods whieh such Officer has reason to believe to have been imported, or to be about to be exported, by land from, or to, any foreign territory to produce the pcrmif granted for such goods ; and any such goods which are dutiable and which are unaccompanied by a permit or do not correspond with the specification contained in the permit produced, shall be detained and shall be liable to confiscation : Provided that nothing in this sub-section shall apply to any imported goods passing from a foreign frontier to a land customs station by a route prescribed in that behalf. The Chief Customs-authority may. by notification in the Gazette, direct that the provisions of this section, or any specified provisions thereof, shall not. in any land customs area specified in the notification, apply in respect of goods of any class or value so specified. A Land Customs Officer empowered in this behalf by the Chief Customs-authority shall pass free of duty any goods imported or exported by land by any passenger, if he is satisfied that the goods are the passenger’s personal baggage in actual use...''