Nasir al-Din al-Tusi
Tajrīd al-iʿtiqād (عربی: تجرید الاعتقاد) or Tajrid al-Kalam is a work by Nasir al-Din al-Tusi about Shia beliefs in Islamic theology. Tajrid is the most famous scholastic text in Shiite theology and most effective work in history of apologetic written by Nasir addin Tousi.