大慧普覺禪師語錄 2.55

2.55

上堂，舉：「魯祖凡有僧來參，即面壁而坐。一日南泉至，亦面壁而坐，南泉遂於背上拍一掌，祖云：『誰？』泉云：『普願。』祖云：『作甚麼？』泉云：『也是尋常。』」師云：「垂鉤四海只釣獰龍，格外玄機為尋知己。南泉老人雖善別機，宜識休咎，要且未知魯祖落處。如今莫有知得落處者麼？切忌向鬼窟裏卜度。」

Ascending the hall, [the Master] cited: "Whenever a monk came to study, Luzu would sit facing the wall. One day Nanquan arrived, and Luzu also sat facing the wall. Nanquan then slapped him once on the back. Luzu said, 'Who is it?' Nanquan said, 'Puyuan.' Luzu said, 'What are you doing?' Nanquan said, 'Nothing out of the ordinary.'" The Master said, "Casting a hook across the four seas is only to catch ferocious dragons; the mystery beyond norms is to search for a kindred spirit. Although old man Nanquan was good at discerning the turning points of potential and well understood good and ill omens, nevertheless he still did not know Luzu's resting place. Now, is there anyone who knows the resting place? Take care not to divine it in a ghost's cave!"