Maqalat al-Islamiyyin wa Ikhtilaf al-Musallin (Arabic: مقالات الإسلاميين واختلاف المصلين, lit.
'The Treatises/Teachings of the Muslims and the Differences of the Prayerful/Worshippers') is one of the main heresiographical works of early Islamic sects written by the Sunni scholar Abu al-Hasan al-Ash'ari (d. 324/935), the eponym of the Ash'ari theological school.
[5] It is in two parts, the first a short account of the historical origins of schism in Islam and a long patient listing of the major groups of his day, and the second a thematic tabulation of the various questions debated among Muslim intellectuals.
[2] This work became a model for similar works produced afterward, such as al-Farq bayna al-Firaq by 'Abd al-Qahir al-Baghdadi (d. 429/1037), al-Tabsir fi al-Din [ar] by Abu al-Muzaffar al-Isfarayini [ar] (d. 471/1078), al-Milal wa al-Nihal by al-Shahrastani (d. 548/1153), and I'tiqadat Firaq al-Muslimin wa al-Mushrikin by Fakhr al-Din al-Razi (d.
[5] Ahmad al-Tayyib, the Grand Imam of al-Azhar, highly praised the book by saying that it has several words that deserve to be written in gold water.