"I asked the Messenger of Allah about dogs and he said: 'If you release your dog and say the name of Allah, then eat, but if you find another dog with your dog then do not eat, for you only said the name of Allah over your dog, not any other.""  

سَأَلْتُ رَسُولَ اللَّهِ ﷺ عَنِ الْكَلْبِ فَقَالَ إِذَا أَرْسَلْتَ كَلْبَكَ فَسَمَّيْتَ فَكُلْ وَإِنْ وَجَدْتَ كَلْبًا آخَرَ مَعَ كَلْبِكَ فَلاَ تَأْكُلْ فَإِنَّمَا سَمَّيْتَ عَلَى كَلْبِكَ وَلَمْ تُسَمِّ عَلَى غَيْرِهِ  

'I releaser my dog and I find another dog with my dog, and I do not know which of them caught (the game).' He said: 'Do not eat, for your only said the name of Allah over your dog, and not over any other dog.""  

أَنَّهُ سَأَلَ النَّبِيَّ ﷺ قَالَ أُرْسِلُ كَلْبِي فَأَجِدُ مَعَ كَلْبِي كَلْبًا قَدْ أَخَذَ لاَ أَدْرِي أَيَّهُمَا أَخَذَ قَالَ لاَ تَأْكُلْ فَإِنَّمَا سَمَّيْتَ عَلَى كَلْبِكَ وَلَمْ تُسَمِّ عَلَى غَيْرِهِ  

A similar report was narrated from 'Adiyy bin Hatim.  

عَنِ النَّبِيِّ ﷺ بِمِثْلِ ذَلِكَ  

"I asked the Messenger of Allah: 'I release my dog. He said: 'If you release your dog and mention the name of Allah, then eat. But it he has eaten some of it, the do not eats, for the caught it for himself. If you release your dog then you find another dog with it, then do not eat, for you said the name of Allah over your dog, and not over any other.""  

سَأَلْتُ رَسُولَ اللَّهِ ﷺ قُلْتُ أُرْسِلُ كَلْبِي قَالَ إِذَا أَرْسَلْتَ كَلْبَكَ فَسَمَّيْتَ فَكُلْ وَإِنْ أَكَلَ مِنْهُ فَلاَ تَأْكُلْ فَإِنَّمَا أَمْسَكَ عَلَى نَفْسِهِ وَإِذَا أَرْسَلْتَ كَلْبَكَ فَوَجَدْتَ مَعَهُ غَيْرَهُ فَلاَ تَأْكُلْ فَإِنَّكَ إِنَّمَا سَمَّيْتَ عَلَى كَلْبِكَ وَلَمْ تُسَمِّ عَلَى غَيْرِهِ  

"I asked the Messenger of Allah: 'I release my dog, and I find another dog with mine, and I do not know which mine, and I do not know which of them caught (the game).' He said: 'do not eat it, for you said the name of Allah over your dog, but not over any other.""  

سَأَلْتُ رَسُولَ اللَّهِ ﷺ قُلْتُ أُرْسِلُ كَلْبِي فَأَجِدُ مَعَ كَلْبِي كَلْبًا آخَرَ لاَ أَدْرِي أَيَّهُمَا أَخَذَ قَالَ لاَ تَأْكُلْ فَإِنَّمَا سَمَّيْتَ عَلَى كَلْبِكَ وَلَمْ تُسَمِّ عَلَى غَيْرِهِ