Sahih Muslim Book - 32, Hadith - 4645

حَدَّثَنَا عَبْدُ اللَّهِ بْنُ مَسْلَمَةَ بْنِ قَعْنَبٍ حَدَّثَنَا حَمَّادُ بْنُ سَلَمَةَ عَنْ ثَابِتٍ عَنْ أَنَسٍ أَنَّ رَسُولَ اللَّهِ -صلى الله عليه وسلم- كُسِرَتْ رَبَاعِيَتُهُ يَوْمَ أُحُدٍ وَشُجَّ فِى رَأْسِهِ فَجَعَلَ يَسْلُتُ الدَّمَ عَنْهُ وَيَقُولُ « كَيْفَ يُفْلِحُ قَوْمٌ شَجُّوا نَبِيَّهُمْ وَكَسَرُوا رَبَاعِيَتَهُ وَهُوَ يَدْعُوهُمْ إِلَى اللَّهِ ». فَأَنْزَلَ اللَّهُ عَزَّ وَجَلَّ (لَيْسَ لَكَ مِنَ الأَمْرِ شَىْءٌ)

It was narrated from Anas that the front tooth of the Messenger of Allah (s.a.w) was broken on the day of (the battle of) Uhud, and he was wounded in his head. He started to wipe away the blood and said: "How can any people prosper when they wound their Prophet and break his tooth when he is calling them to Allah?" Then Allah revealed the words: "Not for you (O Muhammad (s.a.w), but for Allah) is the decision" [Al 'Imran 3:128].