金剛般若經疏論纂要 2.215

2.215

The Wei [translation] adds the following verse: / 'That wondrous essence of the Tathāgata / is the dharmakāya of all Buddhas; / the dharmakāya cannot be seen, / and that consciousness cannot know it.' / The verse says: / 'Only seeing form and hearing sound, / this person does not know the Buddha, / because the dharmakāya of tathatā / is not an object of consciousness.' / Asaṅga says: 'Because it has the mark of the tathatā of dharmas, it is not known as spoken, but is only known through personal realization.'