金光明最勝王經疏 3.209

3.209

贊曰：二乘不了。初徵、後釋。何以故？唯佛普知。定性二乘聖者雖出三界，無種智故，設求真實境，不能以本智知、不能以後得見，或不能現量知、不能比量見。

Commentary: The two vehicles do not comprehend. First the question, then the explanation. Why? Only the Buddha knows universally. Although the noble ones of the two vehicles with fixed nature have transcended the three realms, because they lack the omniscience (sarvākārajñatā), even if they seek the true realm, they cannot know it through fundamental wisdom, nor can they see it through subsequent wisdom; or they cannot know it through direct perception (pratyakṣa), nor can they see it through inference (anumāna).