俱舍論疏 2.17

2.17

The treatise says: "If a phenomenon has objective opposition... the five faculties of the eye and so forth." This is the second part, the subsequent-affirming proposition. Questioning the broad with the narrow is answered by the subsequent-affirming proposition. This is because if something has cognitive opposition, it definitely has objective opposition. Cognitive opposition and obstructive opposition are unrelated in substance, which is why they do not form a tetralemma.