His most important work as far as mathematics is concerned, however, is his immense encyclopaedic work, the Kitab al-Shifa' (The Book of Healing).
Ang kanyang mga pinaka-mahalagang trabaho tulad ng abot ng matematika ay nag-aalala, gayunman, ay kanyang napakalawak ensiklopediko ng trabaho, ang Kitab al-Shifa '(Ang Book ng Healing).