俱舍論疏 30.55

30.55

On the Śāstra's statement: "If the Buddha previously saw [...] because the substance of the self is completely non-existent": The author of the Śāstra refutes them on two fronts. If you say that the Buddha previously saw the unliberated self and therefore declared it, but once it attained nirvāṇa He no longer saw it, and because He did not know it existed the Buddha did not declare it to exist, that would deny that the Great Master possesses omniscience, as it would exist without Him knowing it. If you accept that the World-Honoured One possesses omniscience and yet did not declare it, one should accept that He did not declare it because the substance of the self is completely non-existent.