Dimensions: 250 × 170 mm (size of leaf).Record origin: Emile Savage-Smith, A Descriptive Catalogue of Oriental Manuscripts at St John’s College Oxford (Oxford: Oxford University Press, 2005).MS 103 is the earliest recorded copy of al-A‘raj al Nīsābūrī’s commentary on Naṣīr al-Dīn Ṭūsī’s al-Tadhkirah fī ‘ilm al-hay’ah (‘Memoir on the Science of Astronomy’). The item also includes some incidental Arabic poetry.