Musannaf Ibn Abi Shayba 27:668

Sharik narrated to us, from al-Abbas ibn Dharih, from al-Bahiy, from Aisha, who said: Usama stumbled against the threshold of the door, and he was wounded on his face. The Messenger of Allah (peace and blessings of Allah be upon him) said to me, "Remove the harm from him." I felt squeamish about it, so he began to suck the blood and spit it out from his face, and he said, "If Usama were a girl, I would have clothed him and adorned him until I had married him off."