Every debt or liability, except debts due or liabilities incurred to the Government or to any local authority and rent due to a superior landlord from the Nawab Bahadur as tenant of any property, which is not duly notified to the Manager within the time and in the manner mentioned in sections 8 and 9 shall be barred:
    Provided that if the Manager is satisfied that the claimant was for reasonable cause unable to comply with the provisions of sections 8 and 9, the Manager may admit his claim within a further period of six months from the expiration of the period of six months specified in section 8.