«وَلَمَّا ذَرَّ قَرْنُ الْغَزَالَةِ طَمَرَ طُمُورَ الْغَزَالَةِ»
When the sun’s first edge appeared, he leapt like a gazelle.
The first al-ghazālah refers to the sun; the rising qarn pictures its first visible edge. The second evokes an actual gazelle and the speed of its leap. Ṭamara ṭumūra brings together a verb and its cognate verbal noun for emphasis.
The artistry lies in two linked effects: a repeated word with different contextual senses, and vigorous movement immediately after a stately description of dawn.