Expedition of Abdullah ibn Rawaha
Encyclopedia
Expedition of Abdullah ibn Rawaha to Khaybar, took place in February 628 AD. Ibn Hisham
Ibn Hisham
Abu Muhammad 'Abd al-Malik bin Hisham , or Ibn Hisham edited the biography of Muhammad written by Ibn Ishaq. Ibn Ishaq's work is lost and is now only known in the recensions of Ibn Hisham and al-Tabari. Ibn Hisham grew up in Basra, Iraq, but moved afterwards to Egypt, where he gained a name...

 also refers to this as Abdullah b. Rawaha's raid to kill al-Yusayr b. Rizam.

The assassination was successful, and ibn Rizam was killed as well has 29 of his followers.

Assassination of Al-Yusayr ibn Rizam

The assassination of Abu Rafi
Expedition of 'Abdullah ibn 'Atik
The Expedition of 'Abdullah ibn 'Atik also known as the Assassination of Abu Rafi' ibn Abi Al-Huqaiq , took place in December, 624AD-Background:...

 did not relieve Muhammad of his apprehensions. Muhammad
Muhammad
Muhammad |ligature]] at U+FDF4 ;Arabic pronunciation varies regionally; the first vowel ranges from ~~; the second and the last vowel: ~~~. There are dialects which have no stress. In Egypt, it is pronounced not in religious contexts...

 did not feel safe from the Jews of Khaybar.

Al-Yusayr ibn Rizam was elected the new chief of the Khaybar
Khaybar
Khaybar is the name of an oasis some 153 km to the north of Medina , Saudi Arabia. It was inhabited by Jews before the rise of Islam, and was conquered by Muhammad in 629 AD.-Pre-Islamic Khaybar:...

 Jews. He maintained the same good relations with the Banu Ghatafan that his predecessor Abu Rafi had. Muhammad heard that Al-Yusayr ibn Rizam was planning a fresh attack against him. So he deputed Abdallah ibn Rawaha, a leader of the Banu Khazraj, and sent him with 3 followers to Khaybar to gather intelligence on how Al-Yusayr may be taken unaware and assassinated.

But Abdullah ibn Rawaha found the Jews to be extremely alert for this second assassination to be a success. When he returned to Medina a new strategy was devised, Muhammad again sent him openly with 30 men mounted on camels to persuade al-Yusayr to visit Medina. When they arrived, they assured Yusayr they will make him the ruler of Khaybar and would treat him well, giving al-Yusayr ibn Rizam a solemn guarantee of his safety.

So he was mounted on the horse of Abdullah ibn Unais and the Muslims rode behind him. When they arrived at al-Qarqarat, about six miles from Khaybar, al-Yusayr suspected the ill-motive of the Muslims and changed his mind about going to meet Muhammad. He dismounted from the beast he was riding with Abdullah ibn Unais. Abdullah ibn Unais claimed that he perceived al-Yusayr was drawing his sword. So he rushed at him and hit him with a deadly blow on his hip joint. Al-Yusayr fell wounded on the floor but hit Abdullah ibn Unais and wounded him with a camel staff, the only weapon within his reach.

This was a signal for the Muslims to attack, each of the Muslims killed the Jews on the camels in front of them, one behind the other. The Muslims killed all the Jews, except one who escaped.

Islamic primary sources

The Sunni hadith collection Sunan al-Tirmidhi
Sunan al-Tirmidhi
Jāmi` al-Tirmidhi , popularly and mistakenly Sunan al-Tirmidhi , is one of the Sunni Six major Hadith collections. It was collected by Abu 'Eesa Muhammad ibn 'Eesa al-Tirmidhi.-Title:...

no. 3923 mentions that Muhammad sent a detachment under Abdullah ibn Rawaha:
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