The rule taught in this level is that verbs on this pattern are intransitive.
An intransitive verb does not require a direct object for its basic meaning to be complete.
That is why this paradigm is taught here with active forms only.
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Why Bab Infi'aal Is Intransitive
Derived Trilateral (with Hamzah) - Bab 3: Infi'aal (Infitar)
The rule taught in this level is that verbs on this pattern are intransitive.
An intransitive verb does not require a direct object for its basic meaning to be complete.
That is why this paradigm is taught here with active forms only.