This manuscript is a copy of the commentary by Muḥāmmad al-Aqsarāʾī (d. 779 AH / 1378 CE), entitled Ḥall al-Mūjiz, on the abridgment of Avicenna’s Canon of medicine (al-Qānūn fī al-ṭibb) by Ibn al-Nafīs (d. 687 AH / 1288 CE). Written in 969 AH / 1561 CE by Khalīl Allāh Isfarāyinī, this scholarly codex contains numerous marginal and interlinear glosses and corrections.