Note that this is *not* the Zubdah-i hayʾa, which is in Persian and a different work entirely. Because the two works are often confused, listed manuscripts need to be checked.

From Sajjad Nikfahm Khubravan, PhD dissertation, McGill U, 2022, p. 254:

"Zubdat al-idrāk fī hayʾat al-aflāk (MS Topkapı, Ahmet III, 3420, f. 76a-b), a hayʾa work attributed to Naṣīr al-Dīn al-Ṭūsī, Ibn al-Haytham’s latitude hypothesis is
mentioned without any detail. About this work see: Ragep, Naṣīr al-Dīn al-Tūsī’s Memoir on Astronomy, 66-7. The attribution of this work to Ṭūsī is problematic. Following the chapter on the planetary latitude, the author of Zubdat al-idrāk listed the positions of the planets’ apogees and nodes for the beginning of the year 588 Yazdgirdī which corresponds year 615/1219 (f. 76b). The parameters directly or indirectly were taken from Battānī’s zīj. It is not clear in what context Ṭūsī might compose such a work at that age (he was 18 years old at this date). Nevertheless, the radix might only be due to the source the author used, and this date does not show the composition date of the book. But in addition to this, at the end of Zubdat al-idrāk, the author referred to an earlier work by himself on the planetary sizes and distances. There is no reference to such a work by Ṭūsī in the available sources. The problem regarding the second diameter in the Muʿīniyya does not exist in Zubdat al-idrāk."