Another voice then asked what occasion the princess had for the prayers of the dervise, to which the first answered; “Are you ignorant then, that she is possessed by the power of the Genius Maimoun, the son of Dimdim, who has fallen in love with her? But I know how this good dervise can cure her. The thing is by no means difficult, as I will inform you. In his monastery there is a black cat, which has a white spot at the end of her tail, about the size of a small piece of money. Let him only pull out seven hairs from this while spot, and burn them; and then with the smoke perfume the head of the princess. From that moment she will be so thoroughly cured, and free from Maimoun, the son of Dimdim, that he will never again be able to come near her.”

The chief of the dervises did not lose a single syllable of this conversation between the Fairies and Genii, who, from this time, remained silent the whole night. The next morning, as soon as the day began to break, and the different objects became discernible, the dervise perceived, as the wall was decayed in many places, a hole, by which he could get out without any difficulty.

The Arabian Nights, Volume I of IV — Part 118

The other dervises, who were seeking after him, were delighted at his appearance. He related to them, in a few words, the cunning and wickedness of the guest he had entertained the day before, and then retired to his cell. It was not long before the black cat, which had been mentioned in the discourse of the Fairies and Genii, came to him to be taken notice of as usual. He then took it up, and plucked out seven hairs from the white spot in its tail, and put them aside, in order to make use of whenever he should have occasion for them.

The Arabian Nights, Volume I of IV — Part 118

The sun had not long risen above the horizon, when the sultan, who wished to neglect nothing, from which he thought there was any chance of curing the princess, arrived at the gate. He ordered his guards to stop, and went in with the principal officers who accompanied him. The dervises received him with the greatest respect. The sultan directly took the chief aside, and said to him, “Worthy sheik, you are perhaps already acquainted with the cause of my visit.”--“If, Sire,” the dervise modestly answered, “I do not deceive myself, it is the malady of the princess that has been the occasion of my seeing you; an honour of which I am unworthy.”--“It is so,” replied the sultan, “and you will restore almost my life to me, if, by means of your prayers, I shall obtain the re-establishment of my daughter’s health.”--“If your majesty,” answered the worthy man, “will have the goodness to suffer her to come here, I flatter myself, that with the help and favor of God she shall return in perfect health.”

The Arabian Nights, Volume I of IV — Part 118