Narrated Abu Hurairah: The Prophet صلی اللہ علیہ وسلم said: The purification of the utensil belonging to any one of you, after it has been licked by a dog, consists of washing it seven times, using sand in the first instance. Abu Dawud said: A similar tradition has been narrated by Abu Ayyub and Habib bin al-Shahid on the authority of Muhammad.