汾陽無德禪師語錄 2.54

2.54

馬祖與百丈行次，見野鴨飛過，祖曰：「是什麼？」丈云：「野鴨子。」祖曰：「甚麼處去？」丈曰：「飛過去也。」祖遂扭百丈鼻頭，丈作忍痛聲，祖曰：「何曾飛去？」

Mazu was walking with Baizhang when they saw wild ducks flying past. Mazu said, "What is that?"
Baizhang said, "Wild ducks."
Mazu said, "Where did they go?"
Baizhang said, "They flew away."
Mazu thereupon twisted Baizhang's nose. Baizhang cried out in pain. Mazu said, "When did they ever fly away?"