Once upon a time, there lived in Basra an old man whose only occupation was caring for and loving his only son who was a handsome young man. The old man invested all his money on his son’s education. The young man went away for a few years and acquired an education at a well known university under the great scholars of that age.
The day had arrived for the son to return from his studies and the old man waited at the door for his son. When the son came and met his father, the old man looked into his eyes and felt great disappointment. “What have you learnt my son?” he asked, “I have learnt everything there was to be learnt, father”, he said. “But have you learnt what cannot be taught?” asked the father. “Go, my son and learn what cannot be taught”, said the old man.
The young man went back to his master and asked him to teach him what cannot be taught.
“Go away to the mountains with these four hundred sheep and come back when they are one thousand”, said the master.