首楞嚴義疏注經 4.4

4.4

When the Tathāgata speaks the Dharma, the great assembly all sit; when one wishes to make an inquiry, one first arises to extend respect. The etiquette of extending respect does not depart from the three karmas: kneeling with right knee on the ground and placing palms together is body; being respectful is mind; from 'said to' onward is speech. The tathāgatagarbha mind is neither empty nor existent, identical to both nature and marks; it is called the primary truth. It is what the Buddha has realized, definitively non-delusive; being genuine and real, it is called 'truth.'