Explanation of Ibn Malik's (may Allah have mercy on him) statement: The Doer
Machine translationRead the Arabic original
The Shaykh : All right, he says: "The Doer". The doer in the Arabic language is anyone from whom an action occurs; he is the doer. So if you say, "Zayd is standing," then Zayd is the doer in the Arabic language, because the action occurred from him.