بِحُكْمِ الِاسْتِقْرَاءِ
According to a classification reached by surveying instances.
Istiqrāʾ means examining cases and drawing a general classification or conclusion. Surveying common routes of cognition produces the broad headings of sense, report, and reason. The number three is therefore defended as an analytical division, not by simply repeating an arbitrary list.
What about inner awareness, intuition, or experience? One must first identify how such cognition arises, then determine whether it falls under a broader heading or requires more careful qualification. The classification is meaningful only when its criteria can account for the cases it sorts.