A sound allusion typically offers a reasonably accessible relation between the literal expression and the intended attribute. Mentioning a person's ready hospitality, in the proper context, may transparently imply generosity.
By contrast, an allusion that requires several unmarked inferential jumps can become semantic taʿqid rather than eloquence.
Ask whether the link to the intended sense is contextually supported, recognizable, and proportionate, or whether the reader must invent multiple hidden premises.