Kashf al-Yaqin or Kashf al-Yaqin fi Faḍā'il Amīr al-Mu'minīn (Arabic: کشف الیقین) (Certainty Uncovered) is a medieval Islamic text written by the Shi'ite scholar Allamah Al-Hilli.
It draws upon both Sunni and Shi'a sources to present a theological and historical perspective on Ali's role in early Islamic history.
Commissioned by the Ilkhanid ruler Sultan Khodabandeh in the 14th century, Kashf al-Yaqin it remains a significant work in Shi'a literature.
Hasan ibn `Ali ibn Dawud, writing about him in his book, says, "He was a great Shi`ite scholar of his time, having numerous books and leading Imamiyyah in the rational and transmitted sciences in his time.
"[1] During the life of `Allamah Hilli, Sultan Khodabandeh converted to Shi’ism, had coins minted in the name of the twelve Imams, and had them circulated in the country in AH 708.