ثم البديهيات ستة
The foundational certain propositions are then divided into six kinds.
The source lists:
1. Awwaliyyāt — first principles
2. Fiṭriyyāt — propositions with their proofs at hand
3. Ḥadsiyyāt — intuitively apprehended propositions
4. Mushāhadāt — observations
5. Tajribiyyāt — experiential generalizations
6. Mutawātirāt — knowledge through convergent mass reports
They are grouped as foundations of certainty, but they do not all arise by the same cognitive route. Some depend on concepts, others on evident reasoning, perception, repeated experience, or sufficiently corroborated reports.