Yahya related to me from Malik from Nafi that Abdullah ibn Umar said about a trained dog, "Eat whatever it catches for you whether it eats from it or not."
أَنَّهُ كَانَ يَقُولُ فِي الْكَلْبِ الْمُعَلَّمِ كُلْ مَا أَمْسَكَ عَلَيْكَ إِنْ قَتَلَ وَإِنْ لَمْ يَقْتُلْ