Huike, the Second Patriarch, said to Bodhidharma, "My mind is not yet at rest, Master, I implore you, set my mind to rest."
The master replied, "Bring your mind here and I'll set it to rest for you."
Huike said, "I've searched for my mind, but am unable to find it."
"There," said the master, "I've set your mind to rest."
Case 1, Entangling Vines, Thomas Yuho KIrchnerm, Wisdom Publications, Inc. 2011