When we take a meal, we enter into the process of merging with everything that surrounds us. When we defecate, we enter into the process of merging with everything that surrounds us. When we breathe in and out, we become part of the whole universe. When we realize it with our mind, we merge. So eating becomes a celebration of the Dharma, with no separation between eating and the samadhi of self-fulfillment, the samadhi of play, the samadhi of self-fulfilling activity.
From Bringing the Sacred to Life: The Daily Practice of Zen Ritual by by John Daido Loori, pages 55–56