Sometimes a jussive verb is followed by الـ. When the words are read together, a temporary kasrah helps avoid two adjacent sukuns.
Underlying jussive: تَطْلُعْ
Connected reading: تَطْلُعِ الشَّمْسُ
The same happens in يَدْخُلِ الْإِيمَانُ and يَعْلَمِ اللَّهُ. The verb remains jussive; this connecting kasrah is not a change to naṣb.
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Sometimes a jussive verb is followed by الـ. When the words are read together, a temporary kasrah helps avoid two adjacent sukuns.
Underlying jussive: تَطْلُعْ
Connected reading: تَطْلُعِ الشَّمْسُ
The same happens in يَدْخُلِ الْإِيمَانُ and يَعْلَمِ اللَّهُ. The verb remains jussive; this connecting kasrah is not a change to naṣb.