It was narrated from 'Abdullah bin Mughaffal that:
The Messenger of Allah said: 'If a dog licks a vessel, wash it seven times and rub it with dust the eight times." (JA)
English reference (JA): Vol. 1, Book 1, Hadith 365 (JA)
Arabic reference (JA): Book 1, Hadith 395 (JA)