It was narrated that Anas bin Malik said:
On the Day of Uhud, a molar of the Messenger of Allah (ﷺ) was broken and he was wounded. Blood started pouring down his face, and he started to wipe his face and say: “How can any people prosper if they soak the face of their Prophet with blood when he is calling them to Allah?” Then Allah revealed: “Not for you is the decision.”[3:128]