# The Prisons and Young Offenders Institutions (Scotland) Rules 2011, Paragraph 25


consumes, takes, injects, ingests, conceals inside a body orifice, inhales or inhales the fumes of any substance which is—
(a) a prohibited article;
(b) unauthorised property; or
(c) an article which he or she has been authorised to keep or possess but which he or she has not been specifically authorised to inhale or inhale the fumes thereof;

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Source: https://www.legislation.gov.uk/ssi/2011/331/schedule/1/paragraph/25 (the official version)
Page: https://openlegislation.uk/prisons-and-young-offenders-institutions-scotland-rules-2011/schedule-1/paragraph-25
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.