In “Ibtasama ṣ-ṣabāḥ,” morning is described as smiling. Morning is not a human being; the human model is left unnamed while a characteristic of it—smiling—is attributed to the subject. This illustrates implicit metaphor (istiʿārah makniyyah).
Analysis of the figurative verb may also raise the distinct category of derivative metaphor (tabaʿiyyah). The classifications answer different questions: one concerns the explicitness of the compared terms, the other the grammatical form of the transferred expression.