The Battle of Dhi Qar (Arabic: يوم ذي قار), also known as the War of the Camel's Udder, was a pre-Islamic battle fought between Arab tribes and the Sasanian Empire in Southern Iraq. The battle occurred after the death of Al-Nu'man III by the orders of Khosru II.
The dating of the event is disputed. The Encyclopædia Iranica entry on the subject says: