Answer:
Epigraph
Step-by-step explanation:
An epigraph is a quotation or sentence that is placed at the beginning of a story or a poem, which is indicative of the narrative's core theme or themes, the upcoming events, or the mood of the story.
Epigraphs are usually older references or quotations from other renowned and prestigious literary works or people, and are often untranslated if it comes from a foreign work.