One day, Chang-sha Ching-tsen (d. 868), one of the well-known Chinese Ch'an masters, wandered in the mountain. When he was back just at the gate of the temple, the head monk asked him:
-Where have you been, Sir?
NOT ALLOWED TO SPEAK OF
At some point, something is not allowed to speak of. If someone speaks of, he will get a horn grown on his head.
It is like this: Suppose someone who is a married man and he has met another girl who is very beautiful and attractive to him. He talked to his wife about that girl. At first, his wife showed her understanding and just smiling. However he kept talking about the girl again and again. At some point, his wife stopped smiling and gave him a hard hit on his head. It hurt him badly and he touched his head at the hurt spot with his hand. He felt something protruding there like a new horn of a young big horn. Hope this will help you about "At some point, something is not allowed to speak of..."
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