Purification (Kitab Al-Taharah)

Dawud :: Book 1 : Hadith 66

Narrated AbuSa'id al-Khudri:

The people asked the Messenger of Allah (peace_be_upon_him): Can we perform ablution out of the well of Buda'ah, which is a well into which menstrual clothes, dead dogs and stinking things were thrown? He replied: Water is pure and is not defiled by anything.