Abu Haritha, the guardian of the treasure-chambers, seeing that they had become empty, waited on Al Mahdi with the keys, and said: "Since you have spent all your treasures, what is the use of my keeping these keys? Give orders that they be taken from me." Al Mahdi replied: "Keep them still, for money will be coming in to you." He then dispatched messengers to all quarters in order to press the payment of the revenues, and in a very short time these sums arrived. They were so abundant that Abu Haritha had enough to do in receiving them and verifying the amount. During three days he did not appear before Al Mahdi, who at length said: "What is he about, that silly Bedouin Arab?" Being informed of the cause which kept him away, he sent for him and said: "What prevented your coming to see us?" "The arrival of cash," replied the other. "How foolish it was in you," said Al Mahdi, "to suppose that money would not come in to us!" "Commander of the Faithful," replied Abu Haritha, "if some unforeseen event happened which could not be surmounted without the aid of money, we should not have time to wait till you sent to have the cash brought in." It is related that Al Mahdi made the pilgrimage one year, and passed by a milestone on which he saw something written. He stopped to see what it was, and read the following line: "O Mahdi! you would be truly excellent if you had not taken for a favorite Yakub, the son of Daud." He then said to a person who was with him: "Write underneath that: 'It shall still be so, in spite of the fellow who wrote that—bad luck attend him!' "On his return from the pilgrimage, he stopped at the same milestone, because the verse had probably made an impression on his mind; and such, in fact, appears to have been the case, for very soon after he let his vengeance fall on Yakub. Rumors unfavorable to this minister had greatly multiplied. His enemies had discovered a point by which he might be attacked, and they reminded the Caliph of his having seconded Ibn Abd Allah the Alide[5] in the revolt against Al Mansur. One of Yakub's servants informed Al Mahdi that he had heard his master say: "The Caliph has built a pleasure-house, and spent on it fifty millions of dirhems ($6,250,000) out of the public money." The fact was that Al Mahdi had just founded the town of Isabad. Another time Al Mahdi was about to execute some project when Yakub said to him: "Commander of the Faithful, that is mere profusion." To this Al Mahdi answered: "Evil betide you! does not profusion befit persons of a noble race?"