大般涅槃經義記 8.234

8.234

自下第三教見佛行。師子先問「如先所說菴羅果喻四種人」等，牒佛上言。「有人行細心不實」等，辯前四人。「是初二種云何可知」就之為問。「如佛所說雖依是二不可得知」重牒徵問。如佛所說四種人中，雖依是二，不可知也。

From here below, the third teaches how to see the Buddha's conduct. Siṃha first asks: "As previously spoken regarding the four kinds of persons compared to the āmrāphala fruit," and so forth, citing the Buddha's previous words. "Some whose conduct is subtle but their minds are not real," and so forth, distinguishes the previous four persons. "How can these first two kinds be known?" poses the question regarding them. "As spoken by the Buddha, although relying on these two, they cannot be known" reiterates the question. Among the four kinds of persons spoken by the Buddha, although relying on these two, they cannot be known.