There is a poem called "Look at the clouds outside the window". What is a walk?

Do not insult, look at the flowers before the court; I have no intention of staying or staying, looking at the clouds in the sky.

This is the couplet of Amin Hong Yingming in Chen Meigong's Story of the Deep Window.

Hong Yingming is the author of Caigen Tan, so he entered this sentence in Caigen Tan.

So the earliest source is: Caigen Tan.