question #2 Sahih Muslim 280a, Book 2, Hadith 119 : What is the prescribed method for cleaning utensils that have been licked by a dog?

The Messenger of Allah (ﷺ) ordered killing of the dogs, and then said: What about them, i. e. about other dogs? and then granted concession (to keep) the dog for hunting and the dog 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.