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Abu Yahya ibn al-Sakkak Wikipedia
Abu Yahya ibn al-Sakkak al-Miknasi, full name Abu Yahya or Abu Abd Allah Mohammed ibn Abu Galib ibn Ahmad ibn Mohammed ibn Abu-l-Hasan Ali ibn Mohammed ibn as-Sakkak al-Miknasi. (died 818 AH-1415/6 AD), was a Moroccan Sufi mystic, Maliki scholar, historian and genealogist of great repute, from Tadla, friend of Ibn Khaldun and especially well known as author of an advice to Muslim kings, Nush muluk al-islam bi-al-tarif bi-ma yajibu alay-him min huquq ila bayt al-kiram. In his advice Ibn Sakkak expressed skepticism about the divine right claimed by some rulers in his time.
Ibn Sakkak is also the author of Kitab al-Uslub min-al-kalam ‘ala la hawla wa-la quwwata illa billah (known as Kitab al-Asalib), the first book about the Tariqa Shadhiliyya in Morocco, in which he used the name "Shadhili" for Ibn Abbad al-Rundi (d. 792/1377).