The Caliph's Sister Harun Al-Rashid and the Fall of the Persians

It was quite unsuitable for a man from outside the family to be admitted to the company of a young woman, but Harun found a way to arrange things; he decided to marry them in what the French call a "mariage blanc." As he explained to Ja'far, "You see her only in my company, your body never approaches hers and you have no conjugal relations with her. You may thus share our evenings of pleasure without risk." Ja'far accepted and swore solemnly never to stay with his young wife alone. The charismatic Ja'far controlled many of the levers of power while 'Abbasa was a strong-willed woman whose beauty was second to none. And the close friendship between Harun and Ja'far spawned jealousies among the caliph's entourage. Nor did Zubayda, Harun's favorite Hashemite wife, like Ja'far. He had been a tutor to al-Ma'mun, the son of a Persian slave girl, her son's rival.