Sahih al-Bukhari 5484
Narrated Adi bin Hatim:
The Prophet (ﷺ) said, "If you let loose your hound after a game and mention Allah's Name on sending it, 
and the hound catches the game and kills it, then you can eat of it. But if the hound eats of it, then you 
should not eat thereof, for the hound has caught it for itself. And if along with your hound, joined other 
hounds, and Allah's Name was not mentioned at the time of their sending, and they catch an animal 
and kill it, you should not eat of it, for you will not know which of them has killed it. And if you have 
thrown an arrow at the game and then find it (dead) two or three days later and, it bears no mark other 
than the wound inflicted by your arrow, then you can eat of it. But if the game is found (dead) in 
water, then do not eat of it."
حَدَّثَنَا مُوسَى بْنُ إِسْمَاعِيلَ، حَدَّثَنَا ثَابِتُ بْنُ يَزِيدَ، حَدَّثَنَا عَاصِمٌ، عَنِ الشَّعْبِيِّ، عَنْ عَدِيِّ بْنِ حَاتِمٍ ـ رضى الله عنه ـ عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ ‏
"‏ إِذَا أَرْسَلْتَ كَلْبَكَ وَسَمَّيْتَ فَأَمْسَكَ وَقَتَلَ، فَكُلْ، وَإِنْ أَكَلَ فَلاَ تَأْكُلْ، فَإِنَّمَا أَمْسَكَ عَلَى نَفْسِهِ، وَإِذَا خَالَطَ كِلاَبًا لَمْ يُذْكَرِ اسْمُ اللَّهِ عَلَيْهَا فَأَمْسَكْنَ وَقَتَلْنَ فَلاَ تَأْكُلْ، فَإِنَّكَ لاَ تَدْرِي أَيُّهَا قَتَلَ، وَإِنْ رَمَيْتَ الصَّيْدَ فَوَجَدْتَهُ بَعْدَ يَوْمٍ أَوْ يَوْمَيْنِ، لَيْسَ بِهِ إِلاَّ أَثَرُ سَهْمِكَ، فَكُلْ، وَإِنْ وَقَعَ فِي الْمَاءِ فَلاَ تَأْكُلْ ‏"‏‏.‏