金剛般若經疏論纂要 2.25

2.25

佛所有說皆如其事，今說證果，何疑不然？真語者，說佛身大菩提法也，是真智故。實語者，說小乘四諦，諦是實義。如語者，說大乘法有真如，小乘無也。不異語者，說三世授記等事更無參差。佛將此四語不誑眾生，是故秦譯加不誑語。

Everything the Buddha speaks corresponds to the fact. Now speaking of realizing the fruit, how could there be doubt that it is otherwise? Speaking of what is true refers to speaking of the Tathāgata's body and the Dharma of great bodhi, for it is true wisdom. Speaking of what is real refers to speaking of the Hinayāna Four Truths, for 'truth' conveys the meaning of reality. Speaking of what is as it is refers to speaking of the Mahāyāna teaching having tathatā, which the Hinayāna lacks. Speaking of what is not different refers to speaking of prophecies in the three times and so forth, without any discrepancy. The Buddha uses these four statements not to deceive sentient beings; therefore, the Qin translation adds 'speaks of what is not deceitful'.