It is narrated from Sayyidah Hafsah (may Allah be pleased with her) that the Prophet (peace and blessings be upon him) came to her while there was a woman with her called al-Shifa' who was performing ruqyah for namlah (skin sores), and the Messenger of Allah (peace and blessings be upon him) said to her: "Teach it to Hafsah as well."
Hadith Referenceالمعجم الكبير للطبراني / مسند النساء / 21167