English Translation
Narrated Al-Bara: 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.
This hadith is from Sahih al-Bukhari, the most rigorously authenticated collection in Islamic scholarship. No editorial opinion is added.