«وإن كان الحكم باعتبار تقرره في الواقع»
And if the judgment is made with reference to its establishment in reality.
A real (ḥaqīqiyyah) proposition treats the subject and judgment in reality as such, without restricting the claim to some particular externally existing object or merely to the concept as mental.
«أربعة زوج»
Four is an even number.
The evenness of four is not created by drawing four objects. It belongs to numerical reality whether we consider four in thought or count four things outside the mind.