雲門匡真禪師廣錄 3.135

3.135

問僧：「佛法還有長短也無？」僧云：「這簾子長五尺。」師云：「這箇是簾子，那箇是佛法？」僧云：「喚什麼作簾子？」師云：「脫空妄語漢。」

He asked a monk, "Does the Buddha Dharma also have long and short?" The monk said, "This bamboo screen is five feet long." The Master said, "This is a bamboo screen; which is the Buddha Dharma?" The monk said, "What do you call a bamboo screen?" The Master said, "You empty, lying fellow!"