"'When I had uttered these words, God raised up a light before me, and I went toward it, and lo! I found this very Arab of the desert in his tent, with a fire which he had been just lighting up. "Arab of the desert," said I, "hast thou withal to treat a guest?" "Dismount!" said he. Then I dismounted, and he said to his wife: "Bring here that barley"; and she brought it. "Grind it," said he; and she began to grind it. I then said to him: "Give me a drink of water"; and he brought me a skin in which was a little milk mixed with water, and I drank thereof a drink such as I had never drunk before, it was so sweet! and he gave me one of his saddle-cloths, and I laid my head on it, and never did I sleep a sounder sleep. "'On awaking, I saw him seize on a poor miserable sheep and kill it, when his wife said to him: "Beware, wretched man! thou hast slain thyself and thy children; our nourishment came from this sheep, and yet thou hast killed it! What then have we to live upon?" On this I said: "Do not mind. Bring the sheep here"; and I opened it with the knife I wore in my boot, and I took out the liver, and having split it open, I placed it upon the fire and I ate thereof. I then said to him: "Dost thou want anything? I shall give thee a written order for it." On this he brought me that piece of leather, and I wrote on it with a bit of burnt wood which I picked up at his feet that very note. I then set this seal on it, and told him to go and ask for one Ar-Rabi, to whom he was to give it.' This note contained an order for five hundred thousand dirhems, and Al Mahdi exclaimed on hearing it: 'By Allah! I meant only fifty thousand, but since five hundred thousand are written in it, I shall not diminish the sum one single dirhem; and were there no more in the treasury, he should have it. So give him beasts of burden, and let him take it away.' "In a very short time that Arab had numerous flocks of camels and sheep, and his dwelling became a halting-place for those who were going on the pilgrimage, and it received the name of the 'Dwelling of the host of Al Mahdi, the Commander of the Faithful.'" On another occasion it is recorded that Al Mahdi went out hunting, and his horse ran away with him until he came to the hut of an Arab. And the Caliph cried: "O Arab! hast thou wherewith to feed a guest? "The Arab replied, "Yes," and produced for him a barley loaf, which Al Mahdi ate; then he brought some wine in a bottle, and gave him to drink. And when Al Mahdi had drunk it, he said "O brother of the Arabs, dost thou know who I am?" "No, by Allah," he replied. "I am one of the personal attendants of the Commander of the Faithful," said Al Mahdi. "May Allah prosper thee in thy situation!" returned the Arab. Then he poured out a second glass, and when Al Mahdi had drunk it, he cried: "O Arab, dost thou know who I am?"