Abd al-Rahman ibn Abi Bakr

ʿAbd al-Raḥmān ibn Abu Bakr (Arabic: عبد الرحمن بن أبي بكر; c. 596 or 605–675),[1] was an Arab Muslim military commander in the service of the Islamic prophet Muhammad, and the Rashidun caliphs Abu Bakr (r. 632–634), and Umar (r. 634–644).

Unlike the rest of his family, including his father Abu Bakr and sister Aisha, he did not convert to Islam until the Treaty of Hudaybiyah in 628.

Abu Bakr accepted the challenge, but Muhammad stopped him, saying, "Sheathe your sword, and let us continue to profit by your wise counsels.

The mubarizun unit of the Rashidun army was composed of elite warriors who were champion swordsmen, lancers and archers.

In the battlefield his role was to undermine the morale of the enemy before the beginning of the battle by slaying their champions in duels.

[10] The Byzantines and their Copt allies showering the Rashidun army with arrows and stones, until the Rashidun overcame the defenders, as Dhiraar, the first emerge, came out from the battle with his entire body stained in blood, while confessing to personally slaying about 160 Byzantine soldiers during the battle.

[14] Then Khalid ibn al-Walid, who had previously participated in the conquest of Oxyrhynchus, offered a radical plan to erect a catapult that would be filled with sacks of cotton.