وَهِيَ صِفَةٌ أَزَلِيَّةٌ تَنْكَشِفُ الْمَعْلُومَاتُ عِنْدَ تَعَلُّقِهَا بِهَا
It is an eternal attribute through whose relation known things are disclosed.
Disclosure (inkishāf) means that a thing is known as it truly is; it does not imply that God first lacked awareness and then discovered it. Relation (taʿalluq) names the connection of the attribute of knowledge with what is known. The actual nature, time, and condition of the object are not hidden from God.
For example, God eternally knows a person's journey tomorrow as an event that will occur tomorrow. When the journey occurs, the event's status changes; there is no transition in divine knowledge from ignorance to discovery.