From which poem and who is the author of the line "Only one dipper is needed to drink the three thousand weak waters"?

From the ninety-first installment of Dream of the Red Chamber, which is titled Indulging in Lasciviousness, Bao Toad Designs, and Framing Doubts, Bao Yu Delusionally Talks Zen. It was written by Cao Xueqin, a writer of the Qing Dynasty.

This sentence means there are many things, I only go to one of them. It is often used as a metaphor for love , such as there are many beautiful women around, but I only want you one.

The original text is as follows:

Daiyu said: "Sister Bao and you good how about you? The first time I saw you, I was so happy to see you, I was so happy to see you, I was so happy to see you. Sister Bao before and good, now not and good how you? Today and hello, and later not and hello how are you? What if he doesn't want to be with you?

Bao Bao is the first to have a good relationship with his wife, and she is the first to have a good relationship with him.

Baoyu stayed for a long time, suddenly laughed and said: "Let the weak water three thousand, I only take a dipper drink."

Daiyu said: "Ladybird of the floating water how?"

Baoyu said: "not a dipper floating water, water flows, the dipper from floating ear!"

Daiyu said: "The water stops beads sinking, how?"

Baoyu said: "Zen heart has been stained mud flotsam, not to the spring breeze dance partridge."

Daiyu said: "The first commandment of Zen is not to deceive."

Baoyu said: "There are like three treasures."