Platform Sutra, chapter 9 (tr McRae, BDK edition, p 77-78):
Shenhui said, “Nonabiding is the fundamental, and seeing is the master.”
The master said, “What will this novice say next!”
Shenhui then asked, “When Your Reverence sits in meditation, does he see or not?”
The master struck Shenhui with his staff three times and said, “When I hit you, does it hurt or not?”
[Shenhui] answered, “It both hurts and does not hurt.”
The master said, “I also see and do not see.”
Shenhui asked, “What is this seeing and also not seeing?”
The master said, “My seeing is to see constantly my own mind’s errors. I do not see other people’s right and wrong or good and evil. This is to see and also not to see. You said it hurts and does not hurt. How about this? If you do not hurt, then you’re the same as a tree or rock. If you hurt, then you’re the same as an ordinary [unenlightened] person, who would become resentful.When you just said ‘seeing and also not seeing’ [you thought] they were two extremes, and your ‘hurts and does not hurt’ were [your misconception of] birth and death. But you don’t see your self-nature, so you’re just playing around.”
Shenhui bowed in gratitude.
"There is no such thing as the real mind. Ridding yourself of delusion: that's the real mind."
(Sheng-yen: Getting the Buddha Mind, p 73)
“Don’t rashly seek the true Buddha;
True Buddha can’t be found.
Does marvelous nature and spirit
Need tempering or refinement?
Mind is this mind carefree;
This face, the face at birth."
(Nanyue Mingzan: Enjoying the Way, tr. Jeff Shore; T51n2076, p461b24-26)