صحیح ابن حبان
Ibn Hibban
كتاب الطهارة
Book of Purification
باب الأسآر - ذكر البيان بأن المرء يستحب له عند غسله الإناء من ولوغ الكلب أن يعفر الإناء بالتراب عند الثامنة
Chapter on Leftover Water – Clarification that it is recommended to use soil for the eighth washing when cleaning a vessel licked by a dog
1 hadith
Hadith 1298
Sayyiduna Abdullah bin Mughaffal narrates this statement of the Prophet Muhammad (peace be upon him): "When a dog puts its mouth into a vessel, wash it seven times and on the eighth time scrub it with earth."