كَأَنَّ كِنَاسَيْ ضَالَةٍ يَكْنُفَانِهَا
وَأَطْرَ قِسِيٍّ تَحْتَ صُلْبٍ مُؤَيَّدِ
It is as if two animal shelters at the base of a wild jujube tree flank her, and the curved ends of bows lie beneath a strongly supported back.
In kināsay ḍālah, kinās is the shelter a wild animal makes near the base of a tree; ḍālah is the wild jujube. Yaknufānihā means that two things flank or enclose her.
Aṭr qisiyy are the curved limbs or ends of bows, and ṣulb muʾayyad is a strong, supported back. The combined image conveys spacing, curvature, and structural solidity rather than simply the pleasantness of a tree.