This text is a summary of al-Shaykh al-Tusi's “Misbah al-Mutahajjid”, a book of supplications and rituals. 'Allamah al-Hilli completed his summary in ten chapters, but added an eleventh chapter to discuss the doctrinal beliefs of Islam. He felt he should add this chapter since the validity of acts of worship is dependent on the correctness of one's belief, and the pleasure of worship comes only after knowing God.