If he finds a female dog with his male dog, he did not name it.

ʿAmr b. Yaḥyá b. al-Ḥārith > Aḥmad b. Abū Shuʿayb > Mūsá b. Aʿyan > Maʿmar > ʿĀṣim b. Sulaymān > ʿĀmir al-Shaʿbī > ʿAdī b. Ḥātim

"If you release your dog and other dogs over with you have not mentioned the name of Allah join him, then do not eat (what they catch), because you do not know which of them killed it (the game),"

أَخْبَرَنَا عَمْرُو بْنُ يَحْيَى بْنِ الْحَارِثِ قَالَ حَدَّثَنَا أَحْمَدُ بْنُ أَبِي شُعَيْبٍ قَالَ حَدَّثَنَا مُوسَى بْنُ أَعْيَنَ عَنْ مَعْمَرٍ عَنْ عَاصِمِ بْنِ سُلَيْمَانَ عَنْ عَامِرٍ الشَّعْبِيِّ عَنْ عَدِيِّ بْنِ حَاتِمٍ

أَنَّهُ سَأَلَ النَّبِيَّ ﷺ عَنِ الصَّيْدِ قَالَ «إِذَا أَرْسَلْتَ كَلْبًا فَخَالَطَتْهُ أَكْلُبٌ لَمْ تُسَمِّ عَلَيْهَا فَلَا تَأْكُلْ فَإِنَّكَ لَا تَدْرِي أَيُّهَا قَتَلَهُ»