(12) باب الرُّخْصَةِ فِي إِمْسَاكِ الْكَلْبِ لِلْمَاشِيَةِ
It was narrated that Ibn'Umar said:
"The Messenger of Allah said: 'whoever keeps a dog, two Qirats will be detracted from his reward each day, except a trained hunting dog, or a dog for herding livestock."
Reference: Sunan an-Nasa'i 4284
In-book reference: Book 42, Hadith 22
English translation: Vol. 5, Book 42, Hadith 4289