The middle root consonant of Form IV is originally wāw here, but it appears as long ā in أَقَامَ. The active imperfect يُقِيمُ has long ī, whereas the passive imperfect يُقَامُ has long ā.
أَقَامَ ↔ يُقِيمُ ↔ يُقَامُ
All three are derived from ق و م. The letters visible in a single written form are therefore not a safe substitute for root analysis. The verbal noun إِقَامَةٌ also belongs to this same root and morphological form.
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Why Aqāma Changes Its Middle Letter
Derived Hollow Wāw and Yāʾ Verbs: Short Paradigms and Morphological Reasoning
The middle root consonant of Form IV is originally wāw here, but it appears as long ā in أَقَامَ. The active imperfect يُقِيمُ has long ī, whereas the passive imperfect يُقَامُ has long ā.
أَقَامَ ↔ يُقِيمُ ↔ يُقَامُ
All three are derived from ق و م. The letters visible in a single written form are therefore not a safe substitute for root analysis. The verbal noun إِقَامَةٌ also belongs to this same root and morphological form.