Title: Naṣīr al-Dīn al-Ṭūsī fī marābiʻ Ibn Sīnā
Subjects: Biography, Ismailites, Fatimites
People: Avicenna (980-1037), Naṣīr al-Dīn Muḥammad ibn Muḥammad Ṭūsī (1201-1274)