إِحَاطَةَ الْهَالَةِ بِالْقَمَرِ وَالْأَكْمَامِ بِالثَّمَرِ
Like the moon encircled by its halo and fruit by its covering.
What is compared: people gathered around the preacher.
First comparison: the moon and its halo.
Second comparison: fruit enclosed by a sheath.
Shared feature: a central thing surrounded on all sides.
Both images illuminate the same arrangement, not two different events.