This is a commentary by al-Jurjani on a theological work of 'Adud al-Din al-Iji (d. AH 756/1355 AD) called al-Mawakif fi 'ilm al-kalam. It is likely that this is a contemporary or early copy of this work. Al-Jurjani wrote on many subjects, mainly in Persian. He was one of the scholars which Timur took back to Samarqand.
Another contemporary copy of Kitab al-Ishara dated Shawwal AH 807/2-30 April 1405 AD in Samarqand was sold in these Rooms, 20 April 1999, lot 319.