When a verb is transitive and both voices are considered, the active participle names the agent, whereas the passive participle identifies the person or thing affected by the action.
VerbActive participlePassive participle
أَقَامَمُقِيمٌمُقَامٌ
أَطَارَمُطِيرٌمُطَارٌ
اِسْتَعَانَمُسْتَعِينٌمُسْتَعَانٌ
اِسْتَعَارَمُسْتَعِيرٌمُسْتَعَارٌ
اِخْتَارَمُخْتَارٌمُخْتَارٌ
Even though both interpretations of مُخْتَارٌ look alike, the active-agent and passive-patient relations must not be merged.
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Derived Hollow Wāw and Yāʾ Verbs: Short Paradigms and Morphological Reasoning
When a verb is transitive and both voices are considered, the active participle names the agent, whereas the passive participle identifies the person or thing affected by the action.
VerbActive participlePassive participle
أَقَامَمُقِيمٌمُقَامٌ
أَطَارَمُطِيرٌمُطَارٌ
اِسْتَعَانَمُسْتَعِينٌمُسْتَعَانٌ
اِسْتَعَارَمُسْتَعِيرٌمُسْتَعَارٌ
اِخْتَارَمُخْتَارٌمُخْتَارٌ
Even though both interpretations of مُخْتَارٌ look alike, the active-agent and passive-patient relations must not be merged.