The Lakhmid kingdom was an Arab kingdom in southern Iraq and eastern Arabia from the late 3rd century to 602. The Lakhmids were generally but intermittently the allies and clients of the Sasanian Empire, and participant in the Roman–Persian Wars. This Persian-language manuscript, dating from the 15th century and illustrated by Kamāl ud-Dīn Behzād, depicts the construction of al-Khornaq Castle in the Lakhmid capital al-Hirah. The manuscript is in the collection of the British Museum in London.Illustration credit: Kamāl ud-Dīn Behzād