Narrated Ibn Mughaffal (RA) : The Messenger of Allaah ﷺ ordered the killing of the dogs, and then said: Why are they (people) after them (dogs)? and then granted permission (to keep) for hunting and for (the security) of the herd, and said: When the dog licks the utensil wash it seven times, and rub it with earth the eighth time. Abu Dawud said: Ibn Mughaffal narrated in a similar way.