Once, there was a man walking in the moonlight in a very cold winter. Then, he saw a glittering thing on the road. It was apparently a gold watch. He looked around him, and found that he was alone. He swiftly put it into his pocket and went home. After arriving home, he took it out and found it was a frozen spittle beginning to melt on his hand.
This is a figurative story about the 49 years' sermon of Buddha, which is so much dirty when compared to one's own true mind. Just before his death, Sakyamuni himself said that he had never preached a sermon. All the Buddhist scriptures are said to be a leaf with which parents soothed crying children in old days. They said,"This is money."