Nevertheless, they had got in their house the golden bowl out of which in the old days the great merchant, the head of the family, used to eat; but it had been thrown among the pots and pans, and having been long out of use, was grimed over with dirt, so that the two women did
not know that it was gold. To the door of their house came the greedy hawker on his round, crying, "Waterpots to sell! Waterpots to sell!" And the damsel, when she knew be was there, said to her grandmother, "Oh, do buy me a trinket, grandmother."
"We're very poor, dear; what can we offer in exchange for it?" "Why here's this bowl which is no good to us. Let us change that for it."
The old woman had the hawker brought in and seated, and gave him the bowl, saying, "Take this, sir, and be so good as to give your sister something or other in exchange."
The hawker took the bowl in his hand, turned it over, and, suspecting it was gold, scratched a line on the back of it with a needle, where by he knew for certain that it was real gold.
http://www.sacred-texts.com/bud/j1/j1006.htmsepembacaan ku Dhamma selalu akan di gores dengan jarum (di uji dan di keritik) untuk mendapat pengetahuan sejati nya