According to Emily Savage-Smith, 'this is an extensive and popular commentary on the Mujiz which was given the title Hall al-Mujiz, because according to the author, it resolves (yahullu) the problems and obscurities that occur in the Mujiz. In the introduction the author states that in order to resolve many of these problems he consulted the fundamental books such as the Qanun itself, al-Majusi’s al-Kamil, al-Razi’s al-Hawi and the writings of Najib-al-Din Samarqandi' (E. Savage-Smith, A New Catalogue of Arabic Manuscripts in the Bodleian Library, University of Oxford, volume I: Medicine, entry no. 66, pp.291 – 299). The Mujiz is an epitome of Ibn Sina's Qanun by Ibn al-Nafis (d. 1288 AD).
There are four copies in the Bodleian Library, Oxford (see above). Another copy dated 10 Dhu al-Qa’da AH 852/5 January 1449 AD is the Chester Beatty Library, Dublin (see A.J. Arberry, A Handlist of the Arabic Manuscripts, volume V, p. 92, no.4291). Three copies dated AH 961/1554 AD (OR 5931), 17th century (OR 5857/1) and 18th century (IO ISL 3144) are in the British Library, London (see C.F. Baker (editor), Subject-Guide to the Arabic Manuscripts in the British Library, London, 2001, M.3, p. 358).
See Brockelmann, GAL, i. 457, Suppl. i. 825.