雲門匡真禪師廣錄 2.252

2.252

示眾云：「看看，殺了也。」便作倒勢云：「會麼？若不會，且向拄杖頭上會取。」代云：「龍頭蛇尾，蛇尾龍頭。」又代作倒勢。

Instructing the assembly, he said, "Look, look, killed!" Then he made a posture of falling over and said, "Do you understand? If you do not understand, for the moment understand it from the tip of the staff." Answering on their behalf, he said, "Dragon head, snake tail; snake tail, dragon head." He also made the posture of falling over on their behalf.