If it strikes (the game) with its point, then eat, but if it strikes flatly and it dies, that is Waqidh (beaten into death), do not eat that. I asked the Messenger of Allah ﷺ about (hunting with the help of) dogs, whereupon he said. When you send your dog (for hunting) reciting the name of Allah, then eat (the game), but if some part of it is eaten (by the dogs, then do not eat that, for it (your dog) has caught that (the-game) for itself. I (again) said: If I find along with my dog another dog, and do not know which of (the dogs) has caught (the game). then (what should I do)? Thereupon he ('Messenger of Allah) said: Then don't eat that, for you recited the name of Allah on your dog and not on the other one. (Using translation from Muslim 1929c)
سَأَلْتُ رَسُولَ اللهِ ﷺ عَنِ الْمِعْرَاضِ فَقَالَ رَسُولُ اللهِ ﷺ إِذَا أَصَابَ بِحَدِّهِ فَكُلْ وَإِذَا أَصَابَ بِعَرْضِهِ فَقَتَلَ فَإِنَّهُ وَقِيذٌ فَلَا تَأْكُلْ قَالَ قُلْتُ يَا رَسُولَ اللهِ أُرْسِلُ كَلْبِي؟ قَالَ إِذَا أَرْسَلْتَ كَلْبَكَ وَسَمَّيْتَ فَأَخَذَ فَكُلْ فَإِذَا أَكَلَ مِنْهُ فَلَا تَأْكُلْ فَإِنَّمَا أَمْسَكَ عَلَى نَفْسِهِ قَالَ قُلْتُ يَا رَسُولَ اللهِ أُرْسِلُ كَلْبِي فَأَجِدُ مَعَهُ كَلْبًا آخَرَ لَا أَدْرِي أَيُّهُمَا أَخَذَ؟ قَالَ لَا تَأْكُلْ فَإِنَّمَا سَمَّيْتَ عَلَى كَلْبِكَ وَلَمْ تُسَمِّ عَلَى غَيْرِهِ