he asked the Messenger of Allah about hunting. He said: "When you release your dog, mention the name of Allah over him, and if you catch up with him and he has not killed (the game), then slaughter it and mention the name of Allah over it. If you catch up with him and he has killed (the game) but has not eaten any of it, then eat, for he caught it for you. If you find that the has eaten some of it, then do not eat any of it for he caught it for himself. If there are other dogs with your dog and they have killed (the game) but have not eaten any of it, then do not eat any of it, because you do not know which of them killed it." (Using translation from Nasāʾī 4263)   

أَنَّهُ سَأَلَ رَسُولَ اللهِ ﷺ عَنِ الصَّيْدِ قَالَ إِذَا أَرْسَلْتَ كَلْبَكَ فَاذْكُرِ اسْمَ اللهِ فَإِنْ أَدْرَكْتَهُ لَمْ يَقْتُلْ فَاذْبَحْ وَاذْكُرِ اسْمَ اللهِ وَإِنْ أَدْرَكْتَهُ قَدْ قَتَلَ وَلَمْ يَأْكُلْ فَقَدْ أَمْسَكَهُ عَلَيْكَ فَإِنْ وَجَدْتَهُ قَدْ أَكَلَ مِنْهُ فَلَا تَطْعَمْ مِنْهُ شَيْئًا فَإِنَّمَا أَمْسَكَ عَلَى نَفْسِهِ فَإِنْ خَالَطَ كَلْبَكَ كِلَابٌ فَقَتَلْنَ وَلَمْ يَأْكُلْنَ فَلَا تَأْكُلْ مِنْهُ فَإِنَّكَ لَا تَدْرِي أَيُّهَا قَتَلَ وَإِذَا رَمَيْتَ سَهْمَكَ فَاذْكُرِ اسْمَ اللهِ وَذَكَرَ الْحَدِيثَ