Khalid ibn al-Walid ibn al-Mughira al-Makhzumi (Arabic: خالد بن الوليد بن المغيرة المخزومي) was an Arab Muslim commander in the service of the Islamic prophet Muhammad and the Rashidun caliphs Abu Bakr (r. 632–634) and Umar (r. 634–644). He played the leading military role in the Ridda wars against rebel tribes in Arabia in 632–633 and the early Muslim conquests of Sasanian Iraq in 633–634 and Byzantine Syria in 634–638. A horseman of the Quraysh tribe's aristocratic Makhzum clan, which ardentl