إِلَى مِثْلِهَا يَرْنُو الْحَلِيمُ صَبَابَةً
إِذَا مَا اسْبَكَرَّتْ بَيْنَ دِرْعٍ وَمِجْوَلِ
“Even the composed and forbearing man looks toward one like her with longing, when she has grown tall and appears between the long gown and the shorter garment.”
Yarnū means to gaze with focused attention or longing; al-ḥalīm denotes a person of patience and self-control. Ṣabābah is emotional yearning. Isbakar rat describes developing height or coming into fuller youthful growth.
The point is a contrast between composure and attraction. Someone generally assumed to control his feelings is imagined as affected by the woman's appearance. The rhetorical force depends on the status of the ḥalīm, not merely on another physical description.