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Summary:
Bodhidharma Anthology, records from around 550ish
Dharma Master Chih saw Dharma Master Yuan on the street of the butchers and asked, "Do you see the butchers slaughtering the sheep? Dharma master Yuan said, "My eyes are not blind. How could I not see them? Dharma Master chih said, "Master Yuan, you are saying you see it!" Master Yuan waid, "You are seeing it on top of seeing it!"
Dian, Zen Under the Gun, as late as 1400ish
Dian said, "The fruit of the path of enlightenment is is of itself fundamentally perfectly formed. It does not depend on cultivation or action... ...If you reach total comprehension like this... in brothels and wine shops you dwell in peace, trusting to inherent nature, without any distinction between defiled and pure...
Zen Teaching: Zen Under the Gun, Bodhidharma Anthology
Reddit Post: https://old.reddit.com/r/zen/comments/xvu532/1000_years_historical_records_from_the_precepts/
Zen Lineage: www.reddit.com/r/zen/wiki/getstarted