The sister-in-law did so, but as she knew Ali Baba's poverty, she was curious to know what sort of grain his wife wanted to measure, and artfully putting some suet at the bottom of the measure, brought it to her with an excuse, that she was sorry that she had made her stay so long, but that she could not find it sooner.
Ali Baba's wife went home, set the measure upon the heap of gold, filled it and emptied it often upon the sofa, till she had done: when she was very well satisfied to find the number of measures amounted to so many as they did, and went to tell her husband, who had almost finished digging the hole. While Ali Baba was burying the gold, his wife, to shew her exactness and diligence to her sister-in-law, carried the measure back again, but without taking notice that a piece of gold had stuck to the bottom. "Sister," said she, giving it to her again, "you see that I have not kept your measure long; I am obliged to you for it, and return it with thanks."
As soon as Ali Baba's wife was gone, Cassim's looked at the bottom of the measure, and was in inexpressible surprise 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 shewed 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 sun-rise. Cassim, after he had married the rich widow, had never treated Ali Baba as a brother, but neglected him. "All 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, shewing 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 insulting 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.
Cassim, who wanted no more of Ali Baba, left him, resolving to be beforehand with him, and hoping to get all the treasure to himself. He rose the next morning, long before the sun, and set out for the forest with ten mules bearing great chests, which he designed to fill; and followed the road which Ali Baba had pointed out to him. He was not long before he reached the rock, and found out the place by the tree, and other marks which his brother had given him. When he reached the entrance of the cavern, he pronounced the words, "Open, Sesame," the door immediately opened, and when he was in, closed upon him. In examining the cave, he was in great admiration to find much more riches than he had apprehended from Ali Baba's relation. He was so covetous, and greedy of wealth, that he could have spent the whole day in feasting his eyes with so much treasure, if the thought that he came to carry some away had not hindered him. He laid as many bags of gold as he could carry at the door of the cavern, but his thoughts were so full of the great riches he should possess, that he could not think of the necessary word to make it open, but instead of Sesame, said "Open, Barley," and was much amazed to find that the door remained fast shut. He named several sorts of grain, but still the door would not open.
Cassim had never expected such an incident, and was so alarmed at the danger he was in, that the more he endeavoured to remember the word Sesame, the more his memory was confounded, and he had as much forgotten it as if he had never heard it mentioned. He threw down the bags he had loaded himself with, and walked distractedly up and down the cave, without having the least regard to the riches that were round him.
About noon the robbers chanced to visit their cave, and at some distance from it saw Cassim's mules straggling about the rock, with great chests on their backs. Alarmed at this novelty, they galloped full speed to the cave. They drove away the mules, which Cassim had neglected to fasten, and they strayed through the forest so far, that they were soon out of sight. The robbers never gave themselves the trouble to pursue them, being more concerned to know who they belonged to. And while some of them searched about the rock, the captain and the rest went directly to the door, with their naked sabres in their hands, and pronouncing the proper words, it opened.