By: Hongzhi Zengjue (translated by Master Sheng-Yen)
Your body should sit silently; your mind should be quiescent and unmoving; and your mouth, so still that moss grows around it and grasses sprout from your tongue. Do this without cease, cleansing the mind until it gains the clarity of an autumn pool and is as bright as the moon illuminating the autumn sky.
From: Hoofprint of the Ox: Principles of the Chan Buddhist Path as Taught by a Modern Chinese Master, by Master Sheng-Yen and Dan Stephenson, and quoted in Rebecca' Li’s Illumination.