One-fifth of Booty to the Cause of Allah (Khumus)
Bukhari :: Book 4 :: Volume 53 :: Hadith 364
Narrated Abu Musa:
We got the news of the migration of the Prophet while we were in Yemen, so we set out migrating to him. We were, I and my two brothers, I being the youngest, and one of my brothers was Abu Burda and the other was Abu Ruhm. We were over fifty (or fifty-three or fifty two) men from our people. We got on board a ship which took us to An-Najashi in Ethiopia, and there we found Ja'far bin Abu Talib and his companions with An-Najaishi. Ja'far said (to us), "Allah's Apostle has sent us here and ordered us to stay here, so you too, stay with us." We stayed with him till we all left (Ethiopia) and met the Prophet at the time when he had conquered Khaibar. He gave us a share from its booty (or gave us from its booty). He gave only to those who had taken part in the Ghazwa with him. but he did not give any share to any person who had not participated in Khaibar's conquest except the people of our ship, besides Ja'far and his companions, whom he gave a share as he did them (i.e. the people of the ship).
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