Who dated Faḍl Al Yamamiya?

Fadl al-Qaysi or Faḍl al-Shāʻirah (Arabic: فضل الشاعرة; "Faḍl the Poet"; d. 871) was one of "three early ʻAbbasid singing girls, particularly famous for their poetry" and is one of the pre-eminent medieval Arabic female poets whose work survives. She was a concubine of caliph Al-Mutawakkil.