This application contains a book:
Explanation of the purposes of Imam Masoud bin Omar bin Abdullah, famous for Saad Al-Din Al-Taftazani, who died in 793 AH
Al-Taftazani’s Belief Positions in his book Explanation of the Nasafi Doctrines by Dr. Muhammad Muhammadi bin Muhammad Jamil al-Nuristani al-Afghani


Source of explanation of the purposes: https://archive.org/details/SHMAQT01_201611

Source of Taftazani's Beliefs:
https://web.facebook.com/1780185935541323/posts/2649996298560278/?_rdc=1&_rdr