Sahih Muslim Book 26, Hadith Number 5458.

Abu Sa’id Khudri reported that some persons amongst the Companions of Allah’s Messenger (may peace be upon him) set out on a journey and they happened to pass by a tribe from the tribes of Arabia. They demanded hospitality from the members of that tribe, but they did not extend any hospitality to them. They said to them: Is there any incantator amongst you, at the chief of the tribe has been stung by a scorpion? A person amongst us said: ‘Yes. So he came to him and he practised incantation with the help of Sura al-Fatiha and the person became all right. He was given a flock of sheep (as recompense), but he refused to accept that, saying: I shall make a mention of it to Allah’s Apostle (may peace be upon him), and if he approves of it, then I shall accept it. So we came to Allah’s Apostle (may peace be upon him) and made a mention of that to him and he (that person) said: Allah’s Messenger by Allah, I did not practice incantation but with the help of Sura al-Fatiha of the Holy Book. He (the Holy Prophet) smiled and said: How did you come to know that it can be used (as incantation)? and then said: Take out of that and allocate a share for me along with your share.