«وَجَشَرَ الصُّبْحُ الْمُنِيرُ»
Bright dawn emerged.
The luminous morning is made the subject of an active verb, rather than merely being announced as the arrival of light. This animates the scene and quickens its pace.
Al-ṣubḥ is the grammatical subject and al-munīr its adjective. After establishing their agreement, explain the personifying effect and its role in moving the episode from night-time events to disclosure.