"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."" (Using translation from Nasāʾī 4273)
سَأَلْتُ رَسُولَ اللهِ ﷺ قُلْتُ أُرْسِلُ كَلْبِي وَآخُذُ مَعَ كَلْبِي كَلْبًا آخَرَ لَا أَدْرِي أَيُّهُمَا أَخَذَ؟ قَالَ «لَا تَأْكُلْ فَإِنَّمَا قَدْ سَمَّيْتَ عَلَى كَلْبِكَ وَلَمْ تُسَمِّ عَلَى غَيْرِهِ»