Master Ri-Chang explained in 3A [25.24] on this story…
Once upon a time, there was a famous Zen master named Hanshan. His reputation had spread far and wide. While traveling from the north to the south of China, he stopped in Hangzhou. Many people came to listen to him teach, including a man named Liu Yushou.
Liu approached Master Hanshan and shared a dream he had. In the dream, he saw a tall, strong man, but the man had a strange, protruding mouth that looked like a pig’s snout. Liu asked Master Hanshan what the dream meant.
Master Hanshan replied with a story. “Back in the Tang Dynasty, I once listened to a monk give a teaching. Because of the merit from listening to that teaching, I was reborn in the Song Dynasty as a great general named Cao Han.”
Cao Han was a famous general in the early Song Dynasty. During one battle, after a long struggle, he finally conquered a city. However, in his rage, he ordered the massacre of all the people in the city. Because of this horrible act, Cao Han suffered greatly and was reborn as a pig for many lifetimes.
Master Hanshan then said, “In your dream, the pig you saw is me, from my past life. Tomorrow, that pig will be slaughtered, and it came to you in the dream to ask for help.”
Liu woke up from the dream and immediately heard a pig crying near his boat. Remembering the dream, he hurried to the place where the pig was, hoping to save it. But by the time he arrived, the pig had already been killed.
Liu, confused and distressed, asked Master Hanshan about the dream again. The master explained, “Yes, the man who listened to the teaching in the Tang Dynasty and the pig that was slaughtered today are the same. And that person was you.”
Master Hanshan emphasised the importance of dedicating the merit of good deeds, like listening to teachings, to the path of enlightenment. If we don’t, the blessings we receive can lead to negative actions, causing suffering in future lives. This is what is called the “Plight of Three Lifetimes” where good deeds lead to blessings, but those blessings, if misused, result in karma that causes suffering.