It was narrated from Zaid bin Thabit that a wolf bit a sheep, and they slaughtered it with a sharp-edged stone, and the Messenger of Allah ﷺ allowed them to eat it. (Using translation from Ibn Mājah 3176)  

أَنَّ ذِئْبًا نَيَّبَ فِي شَاةٍ فَذَبَحُوهَا بِمَرْوَةٍ «فَرَخَّصَ النَّبِيُّ ﷺ فِي أَكْلِهَا»