Jarir b. `Abdallah said:
God's messenger said to me, "Why do you not give me rest from Dhul Khalasa?" I told him that I certainly would, but as I was not able to keep from falling off a horse's back, I mentioned the fact to the Prophet. He gave me such a blow with his hand on my breast that I could see the mark of his hand on it and said, "O God, make him sit firm, and make him a guide who is led aright." After that I never fell off my horse. He went with a hundred and fifty resolute horsemen of Ahmas[*] and burned it and broke it up.
*Ahmas (brave) is said to have been applied to Quraish, Kinana and Jadila of Qais because of the hardships they imposed on themselves in their religious observances in pre-Islamic times.
(Bukhari and Muslim.)