al-Bāb al-Ḥādīʿashar (‘The Eleventh Chapter’), is a book on the main theological subjects pertaining to the principles of Shiʿi doctrines, written by Abū Manṣūr Ḥasan b. Yūsuf b. ʿAlī b. Muṭahhar, better known as al-ʿAllāma al-Ḥillī (d. 726/1325). At the request of the vizier Muḥammad b. Muḥammad Quhadī, he wrote a summary in ten chapters (sing. bāb) of the Miṣbāḥ al-mutahajjid by Muḥammad b. al-Ḥasan al-Ṭūsī, known as ‘Shaykh al-Ṭāʾifa’ (d. 460/1068), which discusses the practical rules (furūʿ ) of religion, prayers, and acts of worship. The summary was called Minhāj al-ṣalāḥ fī muk…