Section 13
SEC. 13. The grantee herein shall not, without the approval of the Public Service Commission first had, lease, grant, sell, convey or give in usufruct this franchise and the property and rights acquired thereunder to any person or corporation: Provided, That for the purpose of such lease, grant, sale, conveyance or giving in usufruct, it shall be necessary to file in the Office of the Secretary of Public Works and Communications an agreement in writing by which the person or corporation in whoso favor such lease, grant, sale, conveyance, or giving in usufruct is made, shall bind himself to comply with all the terms and conditions imposed upon the grantee by this franchise and to accept the same subject to all existing terms and conditions: Provided, further, That in case of any national emergency affecting and endangering the public safety and order, the Republic of the Philippines shall have the right to take possession of the electric light system, as provided in this Act, and operate the same until such emergency shall have passed.