There was a caliph of Persia whose name was Al Mamoun. [Footnote: Al Mam'oun] He had two sons whom he wished to become honest and noble men. So he employed a wise man whose name was Al Farra to be their teacher. One day, after lesson hours, Al Farra rose to go out of the house. The two boys saw him and ran to fetch his shoes. For in that country, people never wear shoes in the house, but take them off at the door. The two boys ran for the teacher's shoes, and each claimed the honor of carrying them to him. But they dared not quarrel and at last agreed that each should carry one shoe. Thus the honor would be divided. When the caliph heard of this he sent for Al Farra and asked him, "Who is the most honored of men?"

The teacher answered, "I know of no man who is more honored than yourself."

"No, no," said the caliph. "It is the man who rose to go out, and two young princes contended for the honor of giving him his shoes but at last agreed that each should offer him one."

Al Farra answered, "Sir, I should have forbidden them to do this, but I feared to discourage them. I hope that I shall never do anything to make them careless of their duties."

"Well," said the caliph, "if you had forbidden them thus to honor you, I should have declared you in the wrong. They did nothing that was beneath the dignity of princes. Indeed, they honored themselves by honoring you." Al Farra bowed low, but said nothing; and the caliph went on. "No young man nor boy," said he, "can be so high in rank as to neglect three great duties: he must respect his ruler, he must love and obey his father, and he must honor his teacher."

Then he called the two young princes to him, and as a reward for their noble conduct, filled their pockets with gold.