Kinana ibn ar-Rabi Abu al-Hay bin ibn Abu al-Huqayq al-Nadir

http://en.wikipedia.org/wiki/Kenana_ibn_al-Rabi

http://en.wikipedia.org/wiki/Banu_Nadir

http://en.wikipedia.org/wiki/Invasion_of_Banu_Nadir

Here is Islam's version of events: http://www.bismikaallahuma.org/archives/2005/the-conquest-of-khayba...

Kenana ibn al-Rabi' (Arabic: كنانة ابن الربيع‎, also Kenana bin al-Rabi, Kenana ibn al-Rabi'a, Kenana ibn al-Rabi ibn Abu al-Huqayq) was a Jewish leader of seventh-century Arabia and an opponent of Muhammad; son of the poet al-Rabi ibn Abu al-Huqayq. Ibn al-Rabi' was killed during early Muslim clashes with the Banu Nadir.

Al-Mubarakpuri maintains that al-Rabi was bound by agreements between Muhammad and Khaybar to not conceal anything from the Muslims. He was executed, al-Mubarakpuri concludes, for breaching the agreement. Montgomery Watt supports the view that he was executed for concealing the treasure. Shibli Nomani, however, argues that Kenana was put to death because he had killed Mahmud, the brother of Muhammad bin Maslama. Nomani also casts doubt on the accuraccy of the story due to its sources.