Amr ibn Jarmouz (Arabic: عمر بن جرموز) is the man that killed the famous Muslim Sahaba General Zubayr ibn al-Awwam shortly after the Battle of the Camel, while Zubayr withdrew from the army before the battle began due to a hadith that Ali ibn Abi Talib (a) had reminded him with regards to what Muhammad had said to Zubayr: “You will rise up in a battle against Ali ibn Abi Talib”.
References
Amr ibn Jarmouz Wikipedia(Text) CC BY-SA