- ''This is a sub-article to Muhammad in Medina.
After the Treaty of Hudaybiyyah, Muhammad decided to send letters to many rulers of the world, inviting them to Islam
Muhammad, according to the usually told Islamic historiography, sent ambassadors with such letters to Heraclius
the emperor of Byzantium
, Chosroes II
the emperor of Persia
, the Negus
the ruler of Egypt
, Harith Gassani
the governor of Syria
and Munzir ibn Sawa
the ruler of Bahrain
. The account as transmitted by Muslim historians reads as follows:
The letter to Chosroes II is similar except that it refers to Magians instead of the Arisiyin.