Sahih Muslim
The Book on Salutations and Greetings (Kitab As-Salam)
Book Number: 026 / Hadith Number: 5450
Umm Salama, the wife of Allah's Apostle (may peace be upon him), reported that Allah's Messenger (may peace be upon him) said to a small girl in the house of Umm Salama that he had been seeing on her face black stains and told her that that was due to the infiluence of an evil eye, and he asked that she should be cured with the help of incantation (hoping) that her face should become spotles.