122. Fawāʼid min al-kitāb. al-mausūm bil-Majisṭī li-Ibn Aflaḥ. A compendium of Jābir ibn Aflaḥʼs astronomical work known as Kitāb al-Haiʼah or Iṣlāḥ al-Majisṭī.
123. Fawāʼid multaqaṭah min K. ʻInāyat al-idrāk fī dirāyat al-aflāk. [Transcribed from MS. Thurston 3, f. 69v l. xvii - f. 71v l. xxxi.]
128. Fāʼidah fī kayfīyat ikhrāj al-qīrāṭ min al-ʻadad alladhī ṣaḥḥat minhu al-masʼalah min ayy ʻadad kāna
131. A fāʼidah purporting to have been transmitted by Ṭūsī, who discovered it written on a copy of ?al-Zīj al-ʻalāʼī, with (below) a note from ?Zīj al-iqbāl.