Musnad Ahmad 626:84

Muhammad ibn Ja‘far and Hajjaj narrated to us, they said: Shu‘bah narrated to us, from Mansur, who said: I heard Mujahid narrating, he said: ‘Aqqar ibn al-Mughirah ibn Shu‘bah narrated a hadith to me. When I left him, I had not fully memorized it, so I returned to him with a companion of mine. I met Hassan ibn Abi Wajzah, who had just come out from him, and he said: "What brought you?" I said: "Such and such." Hassan said: ‘Aqqar narrated it to us, from his father, from the Prophet, peace and blessings of Allah be upon him, that he said: "He has not relied upon Allah who cauterizes himself or seeks ruqyah (incantations)."