[http://www.sacred-texts.com/bud/zen/fm/fm.htm Biographical Information about Sengcan as well as the Hsin Hsin Ming itself]

Sengcan: I am riddled with sickness. Please absolve me of my sin.
Huike: Bring your sin here and I will absolve you.
Sengcan [after a long pause]: When I look for my sin, I cannot find it.
Huike: I have absolved you. You should live by the Buddha, the Dharma, and the Sangha.