During the Khalifat of Motasem b'illah, the well of Zemzem was covered above: it had before been enclosed all round, but not roofed. The space between the Hedjer and the Kaaba was laid out with fine marbles. At that time there was a gate leading into the space enclosed within the Hedjer.
Iranian literary tradition in the opening centuries of Islam 1 The character of the Persian history during the Sasanian epoch 6 Importance of this epoch according to the Arab writers of the first centuries of Islam 10 The position of the Parsi community and the centres of the preservation of Persian tradition during the period of the Khalifat in Tabaristan, Khorasan and Fars 15
The seals prefixed to the warrant are, beside his own and that of the emperor of China, whose consequence is well known to the inhabitants of the eastern islands, that of the sultan of Rum, by which is understood in modern times, Constantinople, the seat of the emperor of the Turks, who is looked up to by Mahometans, since the ruin of the khalifat, as the head of their religion; but I have reason to think that the appellation of Rumi was at an earlier period given by oriental writers to the subjects of the great Turkoman empire of the Seljuks, whose capital was Iconium or Kuniyah in Asia minor, of which the Ottoman was a branch.