غُلَامُهُ = غُلَامُ + هُ
Ghulāmu is nominative and muḍāf; -hu is a genitive attached pronoun as muḍāf ilayh. The whole noun phrase serves as the passive subject.
Opening interactive controls...
Parsing Ghulāmuhu
Ism al-Mafʿūl: Formation, Weak Roots and Government
غُلَامُهُ = غُلَامُ + هُ
Ghulāmu is nominative and muḍāf; -hu is a genitive attached pronoun as muḍāf ilayh. The whole noun phrase serves as the passive subject.