(1) A person, who associates himself, or professes to be associated, with a terrorist organisation with intention to further its activities, commits an offence relating to membership of a terrorist organisation:
     Provided that this sub-section shall not apply where the person charged is able to prove--
         (a) that the organisation was not declared as a terrorist organisation at the time when he became a member or began to profess to be a member; and
         (b) that he has not taken part in the activities of the organisation at any time during its inclusion in the ¹[First Schedule] as a terrorist organisation.
     (2) A person, who commits the offence relating to membership of a terrorist organisation under sub-section (1), shall be punishable with imprisonment for a term not exceeding ten years, or with fine, or with both.