Bukhari :: Book 7 :: Volume 69 :: Hadith 512
The Prophet came from Mecca with Abu Bakr. Abu Bakr said "We passed by a shepherd and at that time Allah's Apostle was thirsty. I milked a little milk in a bowl and Allah's Apostle drank till I was pleased. Suraqa bin Ju'shum came to us riding a horse (chasing us). The Prophet invoked evil upon him, whereupon Suraqa requested him not to invoke evil upon him, in which case he would go back. The Prophet agreed.
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