Amr bin Umayyah al-Damri was a companion of the Islamic Prophet Muhammad.
[1] Amr bin Umayyah al-Damri was sent to assassinate Abu Sufyan.
When the news of this massacre reached Muhammad, he was greatly grieved and sent Amr bin Umayyah al-Damri and an Ansar to investigate the whole matter.
[6] On his way back to Qarqara, Amr bin Umayyah rested in the shade of a tree, and there two men of Banu Kilab joined him.
Then Muhammad said to ‘Amr, that he (Muhammad) must pay a debt for the killing of those he pledged protection to (the Dhimmi's)[6] He was sent as an envoy to the king of Abyssinia (now Ethiopia) called Aṣḥama ibn Abjar to invite him to Islam.