• “Al-Tadhkira” by al-Qurtubī and “Al-Durra al-Fākhira fī Kashf ‘Ulūm al-Ākhira” by al-Ghazālī (3/ 864), although in the latter case he did not name the book.

• Sources for the fourth volume, devoted to prophetic medicine:

The author’s principal source in this section was “Al-Ahkām al-Nabawiyya fī al-Sinā‘a al-Tibbiyya” by Abū al-Hasan ‘Alī ibn ‘Abd al-Karīm ibn Tarkhān al-Hamawī, ‘Alā’ al-Dīn al-Kahhāl. Al-Safadī provided a biography of him in “Al-Wāfī” (21/ 266) and “A‘yān al-‘Asr” (3/ 454), mentioning that he was an agent of the treasury in Safad. Among his works, he listed this book, “Al-Qānūn fī Amrād al-‘Ayn,” and others, and stated that he died around 620 AH.

Ibn al-Qayyim drew most of the material in this section, both medical and nonmedical—including hadiths and other quotations—from this book by ‘Alā’ al-Dīn al-Kahhāl, yet never referred to it. At times, he quoted al-Kahhāl’s own words without naming him, referring to him instead as “one of the physicians” (4/ 114), “one of the distinguished physicians” (4/ 125), or “one of the Muslim physicians” (4/ 418).

Several editions of al-Kahhāl’s book have been published, but the only one available to us was that issued by Dār Ibn Hazm, edited by Ahmad ‘Abd al-Ghanī Muhammad al-Najūlī al-Jamal. It is a poor edition, so, alongside consulting it, we had to refer to the manuscript copy from the Rāghib Pasha Library uploaded to the Alukah website, which comes from the library of Dr. Muhammad ibn Turkī al-Turkī.

In his introduction (page wāw) to Ibn al-Qayyim’s work on prophetic medicine, Shaykh ‘Abd al-Ghanī ‘Abd al-Khāliq drew attention to Ibn al-Qayyim’s use of al-Hamawī’s book, stating that he “made extensive use of the books of al-Hamawī and al-Dhahabī in compiling it, as becomes apparent upon consultation and comparison.” In fact, Ibn al-Qayyim did not consult “Al-Tibb al-Nabawī,” attributed to al-Dhahabī; it was written by Dāwūd, the medical practitioner, one of the pupils of Shaykh