أَخْبَرَنَا قُتَيْبَةُ، عَنْ مَالِكٍ، عَنْ أَبِي الزِّنَادِ، عَنِ الأَعْرَجِ، عَنْ أَبِي هُرَيْرَةَ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ " إِذَا شَرِبَ الْكَلْبُ فِي إِنَاءِ أَحَدِكُمْ فَلْيَغْسِلْهُ سَبْعَ مَرَّاتٍ " .
It was narrated from Abu Hurairah that the Messenger of Allah (PBUH) said: "If a dog drinks from the vessel of one of you, let him wash it seven times." Translation Not Available
Book Ref: Sunan An Nisai Book 1 Hadith 63
Web Ref: Sunan An Nisai Vol 1 Book 1 Hadith 63