It is narrated from Hazrat Abu Saeed Khudri (may Allah be pleased with him) that once someone asked the Prophet (peace and blessings be upon him), "O Messenger of Allah (peace and blessings be upon him), can we perform ablution with the water of the well of Buda'ah?" In fact, dirty clothes of women, other foul-smelling things, and the flesh of dogs were thrown into this well. The Prophet (peace and blessings be upon him) replied, "Water is pure; nothing can make it impure."
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 11815
Hadith Gradingحکم دارالسلام:حديث صحيح بطرقه وشواهده، وهذا إسناد ضعيف لجهالة عبيدالله بن عبدالرحمن - ويقال: ابن عبدالله بن رافع، ولجهالة سليط بن أيوب