Muhammad ibn Ja'far al-Khara'iti (d. 327/938) was a Muslim theologian and the author of I'tilal al-qulub (The Malady of Hearts), the earliest book on love in the Islamic world. He was born in Samarra, moved to live in Syria and died in Jaffa or Asqalan.
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Muhammad ibn Ja'far al-Khara'iti Wikipedia(Text) CC BY-SA