"He straightway called one of his female slaves and said: 'Go and tell So-and-so to come down.' He had all the slaves in succession brought before me. After having examined their hands, I said: 'No! the possessor of the hand I saw is not among them.' 'By Allah!' said my host, 'there are only my mother and my sister left! I will send for them.' Such generosity and kindness of heart surprised me. I said to him: 'May my life be your sacrifice! Before calling your mother, call your sister; it is probably she of whom I am in search.' 'Very well,' he said, and sent for her.
"As soon as I set eyes on her hand and wrist I cried: 'It is she, my dear host, it is she!' Without losing a moment, he ordered his servants to bring together ten respectable elderly men from the neighborhood. They came; he then sent for a sum of twenty thousand dirhems in two bags, and, addressing the ten men, said: 'I take you to witness that I give my sister here in marriage to Ibrahim, son of Mahdi, and that I bestow upon her a dowry of twenty thousand dirhems.' His sister and I both gave our agreement to the marriage, after which I gave one of the bags of money to my young wife, and distributed the other among the witnesses, saying: 'Excuse me, but this is all I have by me at present.' They accepted my present and retired.
"My host then proposed to prepare in his own house an apartment for us. Such generosity and kindness made me feel quite embarrassed. I said that I only desired a litter to convey my wife. He readily agreed, and sent along with it so magnificent a trousseau that it entirely fills one of my houses."
Mamoun was astonished at the generosity of the merchant. He granted his freedom and a rich present to the parasite, and ordered Ibrahim to present his father-in-law at court. The latter became one of the most intimate courtiers and companions of the Caliph.
During Al Mamoun's last campaign against the Greek Emperor he arrived at the River Qushairah, and encamped on its banks. Charmed by the clearness and purity of its waters, and by the beauty and fertility of the surrounding country, he had a kind of arbor constructed by the banks of the stream, intending to rest there some days. So clear was the water that the inscription on a coin lying at the bottom could be clearly read; but it was so cold that it was impossible for any one to bathe in it.