Expedition of Amr ibn al-As

Expedition of Amr ibn al-As, also known as the Campaign of Dhatas Salasil, took place in September 629 AD, 8AH, 6th month, of the Islamic Calendar.

Background
The repulse of the Muslim army at the Battle of Mu’tah, affected dangerously Muhammad's prestige among the tribes of the Syrian frontier. There were rumours that a number of tribes, including Banu Qudah were now preparing to attack Medina.

He appointed Amr ibn al-As, the new convert of Islam, to subjugate the Banu Qudah tribe, and incite the tribes friendly to Muhammad to attack the Banu Qudah. Amr was chosen because he was related to the Banu Bali tribe, who were located in the area he was to carry out the operation.

Muhammad sent 300 men and 30 horses with Amr ibn al-As as commander, and in the event of great opposition, the tribes who had already submitted to Islam to come to his aid.

Expedition
After Marching for 10 days, he encamped a spring called Salasil, there he found that the enemy was assembled in large numbers, so he sent a messenger back to Muhammad asking for reinforcement. Muhammad straight away complied and sent 200 men, among whom were Abu Bakr and Umar, headed by Abu Ubaidah ibn al Jarrah.

When Abu Ubaidah arrived he asked to be the Commander of the entire force, to which Amr refused, Abu Ubaidah accepted this and said "be it so", claiming he was told by Muhammad not to fight or cause divisions over leadership.

With this increased number of Muslim army, Amr ibn al-As charged at his enemy and "destroyed them" according to the Muslim scholar Saifur Rahman al-Mubarakpuri, while causing most to flee, except one tribe which fought.

Islamic Primary sources
The Expedition is referenced in the Sunni hadith collection Sahih al-Bukhari as follows:

Allah's Apostle sent 'Amr bin Al As as the commander of the troops of Dhat-us-Salasil. 'Amr bin Al-'As said, "(On my return) I came to the Prophet and said, 'Which people do you love most?' He replied, 'Aisha.' I said, 'From amongst the men?' He replied, 'Her father (Abu Bakr)'. I said, 'Whom (do you love) next?' He replied, "Umar.' Then he counted the names of many men, and I became silent for fear that he might regard me as the last of them."