Gray Matters was produced by Sue Kramer.
Abu Solaiman Dawud ibn Nosair al-Ta ' i , usually referred to as Dawud Tai , -LRB- died between 777 and 782 -RRB- was a Islamic scholar and Sufi mystic .. Sufi. Sufi. His disciples included many influential personalities of Islamic mysticism , e.g. , Maruf Karkhi and Ahmad al-Buni .. Maruf Karkhi. Maruf Karkhi. Ahmad al-Buni. Ahmad al-Buni. Category  :8 th-century Muslim scholars of Islam. Islam. Islam. Category  : Sufi mystics. Sufi. Sufi. Category  : Mysticism