“The Messenger of Allah (ﷺ) said: ‘Whoever keeps a dog, one Qirat will be deducted from him (good) deeds every day, except a dog for farming or herding livestock.”
Sunan Ibn Majah Book 28, Hadith 5
← Previous Hadith “I heard the Messenger of Allah (ﷺ) raising his voice and commanding that dogs be killed, and dogs were killed, except for hunting dogs or dogs kept for herding livestock.”

Sunan Ibn Majah Book 28, Hadith 4 Next Hadith → “Were it not that dogs form one of the communities (or nations – of creatures), I would have commanded that they be killed. But kill those that are all black. There are no people who keep a dog, except for dogs used for herding livestock, hunting or farming, but two Qirat will be deducted from their reward each day.”

Sunan Ibn Majah Book 28, Hadith 6