What is the meaning of the poem "Zen has been stained with mud, and you are not crazy to follow the spring breeze"?

[From]: Daoqian's "Mouth-occupied quatrains"

Dao Qian (1043— 1 106) was a poet in the Northern Song Dynasty. His surname is physical strength, with few words, and he was given the title of Master Miao. Yu Qian (now Lin 'an, Zhejiang) is a floating village person. Becoming a monk since childhood. He made friends with Su Shi and made a special trip to visit him when he lived in Huangzhou. Yuan lives in Zhiguo Temple in Hangzhou. He was ordered to return to secularism because he wrote an ironic poem. Then he got revenge and became a monk again. Author of Parameter Subsets.

[Original]:

Send a message to my gentle and graceful mother in Dongshan, so as not to annoy the king.

Zen has been stained with mud and is not crazy about the spring breeze.

It means: my mind is very fixed when I read Buddha and meditate, like catkins stained with mud, and I don't dance up and down after the spring breeze.