Musnad Abu Ya'la al-Mawsili 150:93

Muhammad ibn al-Sabbah narrated to us, Sharik narrated to us, from al-Abbas ibn Dharih, from al-Bahiy, from Aisha, who said: Usama stumbled at the threshold of the door, and he was wounded on his face. The Prophet, peace and blessings of Allah be upon him, said to me: "O Aisha, remove the harm from him." I felt repulsed by it, so the Prophet, peace and blessings of Allah be upon him, began to suck his wound and spit it out, saying: "If Usama were a girl, I would have adorned him and clothed him until I married him off."