Section 13
SEC. 13. It shall be unlawful for any dispensator of opium to sell or give opium to anv person except to a duly registered user or on permit from the Collector of Internal Revenue. Each sale, gift, or delivery of opium to a duly registered user shall be entered on the back of his certificate or on an official slip for that purpose attached to the certificate by an internal-revenue officer showing the date and hour of sale, gift, or delivery and the amount sold, given, or delivered, and it shall be unlawful for a dispensator to sell, give, or deliver to a registered user of opium in a greater quantity than that stated on his certificate as one day's allowance or the difference between that slated as one day's allowance and the amount noted on the back of the certificate as having been sold, given, or delivered to him that day, or for a dispensator of opium to sell, give, or deliver to a registered user of opium any opium when the entry on his certificate shows that he has been furnished his full allowance for that day. Any person violating the provisions of this section shall be punished by a fine of not less than five hundred pesos and not more than five thousand pesos, or by imprisonment for not more than two years, or by both such fine and imprisonment, in the discretion of the court: Provided, That in case of the commission of a second offense under the provisions of this section the person so convicted, if other than a citizen of the United States or a citizen of the Philippine Islands, may by order of the court be deported.