Hammam b. Munabbih reported:
Of the a hadith narrated by Abu Huraira from Muhammad, the Messenger of Allah ( صلی اللہ علیہ وسلم ), one is this: The Messenger of Allah ( صلی اللہ علیہ وسلم ) said: The purification of the utensil belonging to one amongst you, after it is licked by a dog, lies in washing it seven times.