Basheer b. Yasar said that a man from the Ansar called Sahi b. abu-Hatmah told him that Messenger of Allah (May peace be upon him) gave one Hundred camels to him a blood-wit from among the camels of sadaqah, i.e a blood-wit for the Ansari who was killed at Khaibar.
Sunan Abi Dawud Book 9, Hadith 83