"(sutras are like) Pus stained gauze. Incapable of communicating wisdom. Never helped anyone" looking for the teacher or record of this quote

Someone quoted it to me and I loved it and I want to find the source/context of it or if it was paraphrased from something. If any of you nerds know what book it's in please share your possibly pus stained wisdom with me <3

Submitted September 14, 2020 at 10:45AM by Lethargicpancake https://ift.tt/3hqX5ft