There are some scores of ruba'iyat that may be said to have contributed their imageries to the quatrain.
imagery im·age·ry (ĭm'ĭj-rē)
A set of mental pictures or images.
A technique in behavior therapy in which the patient is conditioned to use pleasant fantasies to counteract the unpleasant feelings associated with anxiety.
The mental pictures created by a piece of writing: “The imagery of “The Waste Land” — crumbling towers, dried-up wells, toppled tombstones — conveys the author's sense of a civilization in decay.”