The subject of active اِجْتَابَ traverses a route. In the passive, the action is predicated of what is traversed.
اِجْتَابَ يَجْتَابُ — someone traversed / traverses it.
اُجْتُوبَ يُجْتَابُ — it was / is traversed.
The middle weak letter alternates in its written representation, including a wāw-like passive-perfect form and an alif in other positions. A passive form must not be glossed as though its grammatical subject were the active doer.
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Ijtāba: Active and Passive Relations
Derived Hollow Wāw and Yāʾ Verbs: Short Paradigms and Morphological Reasoning
The subject of active اِجْتَابَ traverses a route. In the passive, the action is predicated of what is traversed.
اِجْتَابَ يَجْتَابُ — someone traversed / traverses it.
اُجْتُوبَ يُجْتَابُ — it was / is traversed.
The middle weak letter alternates in its written representation, including a wāw-like passive-perfect form and an alif in other positions. A passive form must not be glossed as though its grammatical subject were the active doer.