The Kitabu'l-Asmá' or Book of Divine Names (also known as the Chahar Sha`n (The [Book of the] Four Grades)) is a book written by the Báb, the founder of Bábi religion, in Arabic during his imprisonment in Máh-Kú and Chihriq in Iran (1847-1850). With a total volume of more than 3,000 pages, it is the largest revealed scripture in religious history. At least twenty-six manuscripts exist, and much of the text has not yet been located. Some extracts are available in English in the volume Selections from the Writings of the Báb.
The text is divided in nineteen unities (Vahid) and 361 gates (Báb; chapters). and consists largely of "lengthy variations of invocations of the names of God'. Each name is discussed in four different parts, each part written in a different 'mode of revelation': divine verses, prayers, commentaries, and rational arguments. The 361 chapters symbolize "all things" (Kull-i-Shay’) and the days of the year of the Badi' calendar. Where the materials about the calendar are located in the Kitabu'l-Asmá' is needs further research.
- Lambden, Stephen (2018). Kitab al-asma' - The Book of Names.
- Smith, Peter (2000). "Names, Book of". A concise encyclopedia of the Bahá'í Faith. Oxford: Oneworld Publications. pp. 258. ISBN 1-85168-184-1. https://books.google.com/books?id=pYfrAQAAQBAJ.
- Saiedi 2008, pp. 36
- Denis MacEoin (1992). The Sources for Early Bābī Doctrine and History. Leiden: Brill. pp. 91–92. ISBN 90-04-09462-8. https://books.google.com/books?id=xqV9-zmMxsUC.
- Saiedi 2008, pp. 45
- Saiedi 2008, pp. 337
- Saiedi 2008, pp. 336
- Saiedi, Nader (2008). Gate of the Heart. Waterloo, ON: Wilfrid Laurier University Press. ISBN 978-1-55458-035-4. https://books.google.com/books?id=XTfoaK15t64C.
- The Báb (1976). Selections from the Writings of the Báb. Wilmette, Illinois, USA: Bahá'í Publishing Trust. pp. 129–149. ISBN 1-931847-30-4. http://reference.bahai.org/en/t/tb/SWB/.
Online manuscripts (only a fraction of the size of the complete work):
- Kitabu'l-Asma' (2010; 481 pages)
- Kitab-i-Asma' (2005; 481 pages)
- INBA, Vol. 29 Tablets of the Bab - "The book of Names - Kitab-i-Asma" (336 pages)