Abu Sa'id al-Khudri said that some people asked God’s messenger whether they might perform ablution out of the well of Buda‘a, which was a well into which menstrual cloths, dead dogs and stinking things were thrown, and he replied, “Water is pure and is not defiled by anything.” Ahmad, Tirmidhi, Abu Dawud and Nasa’i transmitted it.
Hadith Referenceمشكوة المصابيح / كتاب الطهارة / 478
Hadith Gradingالألبانی:صَحِيح | زبیر علی زئی:إسناده حسن
Hadith Takhrij´تحقيق و تخريج: محدث العصر حافظ زبير على زئي رحمه الله` «إسناده حسن، رواه أحمد (3 / 31 ح 11277) والترمذي (66 وقال: حديث حسن) و أبو داود (66) والنسائي (1/ 174 ح 327)»