Abu Bakr bin Sulayman bin Abi Hathmah narrates from Sayyidah al-Shifa (may Allah be pleased with her) that the Prophet (peace and blessings be upon him) came to Sayyidah Hafsah (may Allah be pleased with her) while I was with her. He (peace and blessings be upon him) said to me: "Will you not teach her the ruqyah for boils and sores (al-namlah), just as you taught her writing?"
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الضحايا / 19597