"We went out with the Messenger of Allah on the campaign of Tabuk, and there was a friend of ours with us, who fought with a man from among the Muslims. The man bit him on the forearm, so he pulled it away from his mouth and a tooth fell out. The man came to the Prophet, seeking blood money, but his brother and bite him like a stallion bites, then come and demand blood money? There is no blood money for that." And the Messenger of Allah juddgedit to be invalid. (Using translation from Nasāʾī 4765)   

عَنْ عَمَّيْهِ يَعْلَى وَسَلَمَةَ ابْنِيْ أُمَيَّةَ قَالَا خَرَجْنَا مَعَ رَسُولِ اللَّهِ ﷺ فِي غَزْوَةِ تَبُوكَ وَمَعَنَا صَاحِبٌ لَنَا فَقَاتَلَهُ رَجُلٌ فَعَضَّ ذِرَاعَهُ فَاجْتَذَبَهَا مِنْ فِيهِ فَسَقَطَتْ ثَنِيَّتَاهُ فَذَهَبَ إِلَى رَسُولِ اللَّهِ ﷺ يَلْتَمِسُ الْعَقْلَ فَقَالَ رَسُولُ اللَّهِ ﷺ «يَنْطَلِقُ أَحَدُكُمْ إِلَى أَخِيهِ فَيَعَضُّهُ كَعَضِيضِ الْفَحْلِ ثُمَّ يَأْتِي بَعْدَ ذَلِكَ يَلْتَمِسُ الْعَقْلَ انْطَلِقْ فَلَا عَقْلَ لَكَ» فَأَبْطَلَهَا رَسُولُ اللَّهِ ﷺسكت عنه الذهبي في التلخيص