In the poem, farʿ refers to hair, while mustashzirat describes its rising or projecting form. The reader can recover the poet's visual image.
Two questions must be separated:
1. What scene is being described? — Dense hair with projecting locks.
2. How easy is the chosen expression to articulate? — The word is treated as phonetically cumbersome.
A vivid image and an awkward word may coexist. The artistic value of the scene does not automatically establish that every sound sequence used in it is fasih.