汾陽無德禪師語錄 2.6

2.6

When Mazu was staying in a hermitage, he often sat in meditation. Venerable Rang took a brick and polished it in front of the hermitage. The Patriarch said: "What are you polishing a brick for?" Rang said: "To make a mirror." The Patriarch said: "How can polishing a brick make a mirror?" Rang said: "If polishing a brick cannot make a mirror, how can sitting in meditation make a Buddha?" [Mazu] said: "What then is correct?" Rang said: "Take, for example, driving a cart: if the ox does not move, is it right to hit the cart, or is it right to hit the ox?"