As soon as her sister-in-law was gone, Cassim's wife looked at the bottom of the measure, and was inexpressibly surprised to find a piece of gold stuck to it. Envy immediately possessed her breast. "What!" said she, "has Ali Baba gold so plentiful as to measure it? Where has that poor wretch got all this wealth?" Cassim, her husband, was not at home, but at his counting-house, which he left always in the evening. His wife waited for him, and thought the time an age; so great was her impatience to tell him the circumstance, at which she guessed he would be as much surprised as herself. When Cassim came home, his wife said to him: "Cassim, I know you think yourself rich, but you are much mistaken; Ali Baba is infinitely richer than you; he does not count his money, but measures it." Cassim desired her to explain the riddle, which she did, by telling him the stratagem she had used to make the discovery, and showed him the piece of money, which was so old that they could not tell in what prince's reign it was coined. Cassim, instead of being pleased, conceived a base envy at his brother's prosperity; he could not sleep all that night, and went to him in the morning before sunrise, although after he had married the rich widow, he had never treated him as a brother, but neglected him. "Ali Baba," said he, accosting him, "you are very reserved in your affairs; you pretend to be miserably poor, and yet you measure gold." "How, brother?" replied Ali Baba; "I do not know what you mean: explain yourself." "Do not pretend ignorance," replied Cassim, showing him the piece of gold his wife had given him. "How many of these pieces," added he, "have you? My wife found this at the bottom of the measure you borrowed yesterday." By this discourse, Ali Baba perceived that Cassim and his wife, through his own wife's folly, knew what they had so much reason to conceal; but what was done could not be recalled; therefore, without shewing the least surprise or trouble, he confessed all, told his brother by what chance he had discovered this retreat of the thieves, in what place it was; and offered him part of his treasure to keep the secret. "I expect as much," replied Cassim haughtily; "but I must know exactly where this treasure is, and how I may visit it myself when I choose; otherwise I will go and inform against you, and then you will not only get no more, but will lose all you have, and I shall have a share for my information." Ali Baba, more out of his natural good temper, than frightened by the menaces of his unnatural brother, told him all he desired, and even the very words he was to use to gain admission into the cave.