GENERAL PART
Chapter One
FUNDAMENTAL PROVISIONS
No Criminal Offence or Sentence Without the Statute
Article 2
No sentence or other criminal sanction shall be imposed on any person for committing an offence that did not constitute a criminal offence under the statute prior to being committed, and for which a sentence was not prescribed by the statute.
Nullum crimen sine lege
Nulla poena sine lege
EDIT.