Phap Hien was a Vietnamese Zen master. He lived in the late 5th century and early the 6th century. When he was a young monk at the Phap Van Temple he met Vinitaruci (?-594) who was one of the successors of Seng-tsan, the Third Patriarch...
Along the riverbank under the trees, I discover footprints!
Even under the fragrant grass I see his prints.
Deep in remote mountains they are found.
These traces no more can be hidden than one's nose, looking heavenward.
Comment: Understanding the teaching, I see the footprints of the bull. Then I learn that, just as many utensils are made from one metal, so too are myriad entities made of the fabric of self. Unless I discriminate, how will I perceive the true from the untrue? Not yet having entered the gate, nevertheless I have discerned the path.