Asas al-Taqdis

Asās al-Taqdīs (Arabic: أساس التقديس, lit. 'The Foundation of Declaring Allah's Transcendence'), also known as Ta'sis al-Taqdis (Arabic: تأسيس التقديس, lit. 'The Establishment of the Sacred') is an Islamic theological book, written by the Shafi'i-Ash'ari scholar Fakhr al-Din al-Razi (d. 606/1209), as a methodical refutation of the Karramiyya and other anthropomorphists.

Fakhr al-Din al-Razi wrote this work to counter the book Kitab al-Tawhid composed by the ultra-traditionalist Ibn Khuzayma (d. 311/923). He referred to Ibn Khuzayma as 'the corporealist' (al-mujassim).

He said in the book's introduction that he dedicated it especially to the Sultan Abu Bakr ibn Ayyub.