If Ibn Malik had said in the example, "So that your son does good and does evil," would the pronoun be implied or explicit?

The student: So, if he said, "So that your son does good and does evil"?

The Shaykh : Here, it is implied.
The student: And it is not explicit?

The Shaykh : It is not explicit, because the singular pronoun is hidden.
The student: And the singular feminine?

The Shaykh : And the singular feminine, like "So that your daughter does well and does poorly," yes?
The student: It is established that inflection is a branch of meaning.

The Shaykh : What do you mean?
The student: Inflection branches from meaning.