Al-Mu'jam al-Awsat 3294 — Abd al-Rahman bin al-Sa'ib al-Hilali

Abd al-Rahman bin al-Sa'ib al-Hilali (may Allah have mercy on him), who was the nephew of Sayyidah Maymunah (may Allah be pleased with her), the wife of the Prophet (peace and blessings be upon him), relates that Sayyidah Maymunah (may Allah be pleased with her) said: "O my nephew, come, let me treat you with the ruqyah taught by the Messenger of Allah (peace and blessings be upon him)." Then she recited: 'Bismillahi arqika, wallahu yashfika min kulli da'in fika, adhhib al-ba's, rabb al-nas, ishfi la shafiya illa anta' (In the name of Allah I treat you with ruqyah, and may Allah cure you of every disease that is in you. O Lord of mankind, remove the affliction; grant cure, there is no one who cures except You).
Imam al-Tabarani (may Allah have mercy on him) said: "This hadith is narrated from Sayyidah Maymunah (may Allah be pleased with her) only with this chain; Mu'awiyah bin Salih is alone in narrating it."