金剛般若經旨贊 2.111

2.111

經。何以故至諸法如義　贊曰。此真如不可說。文中徵釋。何故菩提無有實法。若無菩提佛亦非有。言於彼時無可得者。何以故耶。彼時所授如來記者。如來即是諸法真如。而此真如實不可說。以離戲論煩動心故。非有為漏實異性故。故於彼時無說無得。

Sūtra: "Why is this? 'Tathāgata' means... the meaning of the suchness of all dharmas." / Commentary: This is that tathatā cannot be spoken. Within the text, he questions and explains. Why is it that bodhi has no real dharma? If there is no bodhi, a Buddha also does not exist. As for saying that at that time there was nothing attainable, why is this? The prediction of the Tathāgata conferred at that time means that the Tathāgata is simply the suchness (tathatā) of all dharmas. Yet this tathatā is truly unspeakable, because it is free of conceptual proliferation and a disturbed, agitated mind, and because it is not of a conditioned, contaminated nature that is genuinely distinct. Therefore, at that time there was nothing spoken and nothing attained.