Anas bin Malik reported,

The Messenger of Allah ﷺ had his front tooth broken on the day of Uhud and his head was wounded. He began wiping the blood from himself, saying, "How can a people prosper who have wounded their Prophet and broken his tooth while he calls them to Allah?" So Allah revealed, "Not for you is the matter at all" [Al Imran 3:128].

حدثنا عبد الله بن مسلمة بن قعنب حدثنا حماد بن سلمة عن ثابت

عن أنس

أن رسول الله ﷺ كسرت رباعيته يوم أحد وشج في رأسه فجعل يسلت الدم عنه ويقول كيف يفلح قوم شجوا نبيهم وكسروا رباعيته وهو يدعوهم إلى الله فأنزل الله عز وجل {ليس لك من الأمر شيء}