Narrated Anas:
"On the Day of Uhud, the incisors of the Prophet (ﷺ) were broken, and he had a facial wound in the area of the forehead, such that the blood flowed over his face. He said: 'How can a people that do this to their Prophet succeed, while he is calling them to Allah?' So the following was revealed: Not for you is the decision; whether He turns in mercy towards them or punished them... (3:128) until its end."
English reference: Vol. 5, Book 44, Hadith 3002
Arabic reference: Book 47, Hadith 3272