Makatib AL Rasoul

Makatib al-rasul is a book consisting of letters and documents attributed to Muhammad. The book was collected by The Late Ayatollah Ahmadi Miyanji.
Editor.
The Late Ayatollah Ali Ahmadi Myanji was a jurist. He was born in East Azerbaijan Province in Iran. He wrote books covering religious sciences.
Subject.
"Makatib al-rasul" includes letters addressing kings and other rulers, as well as letters about convictions during that time.
Importance.
Muhammad's writings existed in historical and religious books in a range of inconsistent formats and presentations. Myanji was the first author to collect and correct these documents..
Contents.
Ayatollah Ahmad Miyanji divided the book into two parts. The first part contained letters read by Muhammad to Imam Ali and scribed by the latter. The second part is of those writings inviting other rulers and kings to convert to Islam. This book is in Arabic language. It has four volumes with fourteen chapters, as follows:
Style and Methodology.
Sources include the Hadith, History and Sirah. He references every letter after introducing it. The editor also provides accompanying critiques and analysis.
Publication.
This book was published for the first time in 1339 solar. Later the book has published in 4 volumes along with corrections and additions by Dar Al Hadith publications. The first three volumes of the book include the original discussions and the fourth volume encompasses the content of verses and narrations.