كَتَبَ الطَّالِبُ الدَّرْسَ.
The verb kataba has a direct object, ad-darsa. Its passive participle describes that object: ad-darsu maktūbun, the lesson is written.
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Why Transitivity Matters
Ism al-Mafʿūl: Formation, Weak Roots and Government
كَتَبَ الطَّالِبُ الدَّرْسَ.
The verb kataba has a direct object, ad-darsa. Its passive participle describes that object: ad-darsu maktūbun, the lesson is written.