Sahih Muslim
The Book on Salutations and Greetings (Kitab As-Salam)
Book Number: 026 / Hadith Number: 5452
Jabir b. 'Abdullah reported that Allah's Apostle (may peace be upon him) granted a special sanction for incantation in case of the snake poison to a tribe of 'Amr. Abu Zubair said: I heard Jabir b. 'Abdullah as saying that the scorpion stung one of us as we were sitting with Allah's Messenger (may peace upon him). A person said: Allah's Messenger, I use incantation (for curing the effect. of sting), whereupon he said: He who is competent amongst you to benefit his brother should do so.