Shundo David Haye – Zen Priest

‘When Shishuang met Daowu, he said, “What is the transcendent wisdom that meets the eye?”
Daowu called to an attendant and he responded. Daowu said to him, “Add some clean water to the pitcher.”
After a long pause, Daowu said to Shishuang, “What did you just come and ask me?”
Shishuang started to raise his previous question when Daowu got up and left the room. Shishuang then had a great realization.’ (Zen’s Chinese Heritage)

As another sage once said: say something once, why say it again? Daowu had already offered a clear explanation. What else is it going to look like?