At one time Venerable Kāmabhū was staying near Macchikāsaṇḍa in the Wild Mango Grove. Then Citta the householder went up to Venerable Kāmabhū, sat down to one side, and said to him:

“Sir, how many processes are there?”

“Householder, there are three processes. Physical, verbal, and mental processes.”

Saying “Good, sir,” Citta approved and agreed with what Kāmabhū said. Then he asked another question:

“But sir, what is the physical process? What’s the verbal process? What’s the mental process?”

“Breathing is a physical process. Placing the mind and keeping it connected are verbal processes. Perception and feeling are mental processes.”