‘Dogen drew a circle in the air with his whisk, held up the whisk, and said: If I hold this up, you call it buddhas appearing in the world. If I put it down, you call it the ancestral teacher coming from the west. If I draw a circle, you call it what is protected and cared for by the buddhas and ancestral teachers. When I do not hold it up, put it down, or draw a circle, how do you assess this? Even if you can assess it, you should laugh at both the view of the unconditioned and at the livelihood in the demon’s cave. Although it is like this, students of Eihei, there is another excellent place. Great assembly, do you want to see that excellent place?
Again Dogen held up his whisk, and after a pause said: Great assembly, do you understand? If you understand, the Dharma body of all buddhas enters my nature. If you do not understand, my nature in the same way joins together with the Tathagata. Great assembly, what is the meaning of “the Dharma body of all buddhas enters my nature”, and of “my nature in the same way joins together with the Tathagata”?
After a pause Dogen said: In the early morning eat gruel, at lunchtime rice. In the early evening do zazen, and at night sleep.’ (Extensive Record, 518)
I did not understand so well the function of the whisk and how it can manifest the teaching in the way that Dogen is talking about here, until I saw Hoitsu Suzuki Roshi offering lessons in how to use the whisk ahead of the Mountain Seat Ceremony at Zen Center in 2012. When I went looking for the pictures, I also found photos of him with ceremonial cymbals, inkins, a piece of paper, and a statue of Bodhidharma, all held and met with the same sense of complete presence and concentration. I think this is what Dogen was also doing.