´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."
Hadith ReferenceSunan an-Nasa'i / The Book of Hunting and Slaughtering / Hadith: 4289
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:متفق عليه