Sunan an-Nasa'i 4768
سنن النسائي#4768Sahihأَخْبَرَنَا إِسْحَاقُ بْنُ إِبْرَاهِيمَ، قَالَ أَنْبَأَنَا سُفْيَانُ، عَنِ ابْنِ جُرَيْجٍ، عَنْ عَطَاءٍ، عَنْ صَفْوَانَ بْنِ يَعْلَى، عَنْ أَبِيهِ، قَالَ غَزَوْتُ مَعَ رَسُولِ اللَّهِ صلى الله عليه وسلم فِي غَزْوَةِ تَبُوكَ فَاسْتَأْجَرْتُ أَجِيرًا فَقَاتَلَ أَجِيرِي رَجُلاً فَعَضَّ الآخَرُ فَسَقَطَتْ ثَنِيَّتُهُ فَأَتَى النَّبِيَّ صلى الله عليه وسلم فَذَكَرَ لَهُ فَأَهْدَرَهُ النَّبِيُّ صلى الله عليه وسلم .
It was narrated from Safwan bin Ya'la that his father said:"I went on the campaign to Tabuk with the Messenger of Allah, and I hired a worker. My hired man fought with another man. The other one bit him, and his front tooth fell out. He went to the Prophet and told him about that, but the Prophet considered it to bin vain
Scholarly Authentication
The label above is the grade most of these scholars gave — one dissenting opinion no longer speaks for all of them. If any scholar calls a narration fabricated, that verdict is shown instead, whatever the others say. Each scholar's own wording:
In-book reference: 45:63