«فَلَمَّا طَالَ أَمَدُ الِانْتِظَارِ وَلَاحَتِ الشَّمْسُ فِي الْأَطْمَارِ»
As the wait lengthened, the sun seemed to appear in worn-out garments.
Amad is a period or span. Aṭmār are old, worn garments; they become an image for the diminished light of the sinking sun.
Earlier the men were dressed in worn wraps; now the sun seems dressed in old clothing. The recurrence of dress imagery gives the episode a subtle visual coherence, while marking the passage toward evening.