Union Catalogue of Manuscripts from the Islamicate World

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.

The above references reflect only the current coverage of the online catalogue and may not be comprehensive.