There was a man who excelled in the art of wrestling, knowing three hundred and sixty fine techniques, and each day he would wrestle using a different one. He had a particular fondness for one of his students and taught him three hundred and fifty-nine techniques, but he always delayed teaching him the last one. In time, the student became so strong and skilled that no one could match him. He even boasted to the king of that era, saying, “The only advantage my master has over me is his seniority and the right of mentorship; otherwise, I am his equal in strength and skill.” The king found this statement troubling and ordered a wrestling match between them.
A spacious arena was arranged, and the pillars of the state, the dignitaries of the court, and the strongmen of the land gathered. The student entered like a raging elephant, with such force that if he had struck a mountain of iron, he would have uprooted it. The master realized that the young man was stronger than him, so he used the unique technique he had kept hidden. The student did not know how to counter it and was thrown to the ground. The crowd cheered, and the king ordered rewards for the master and scolded the student, saying, “You dared to challenge your mentor and were defeated.” The student replied, “O King of the world! He did not overpower me with strength but with a technique he had withheld from me all his life. Today, he used that technique to defeat me.”
The king said, "For such a day, the wise have said: Do not give your friend so much power that he can become your enemy. Have you not heard what the one who was betrayed by his own protégé said?:
Either there was no loyalty in the world, Or no one in this age practiced it. No one learned the art of archery from me, Without eventually making me their target."