The Book of Water
2/1. Chapter:
The Well Of Buda'ah
Sunan an-Nasai
أَخْبَرَنَا هَارُونُ بْنُ عَبْدِ اللَّهِ، قَالَ حَدَّثَنَا أَبُو أُسَامَةَ، قَالَ حَدَّثَنَا الْوَلِيدُ بْنُ كَثِيرٍ، قَالَ حَدَّثَنَا مُحَمَّدُ بْنُ كَعْبٍ الْقُرَظِيُّ، عَنْ عُبَيْدِ اللَّهِ بْنِ عَبْدِ الرَّحْمَنِ بْنِ رَافِعٍ، عَنْ أَبِي سَعِيدٍ الْخُدْرِيِّ، قَالَ قِيلَ يَا رَسُولَ اللَّهِ أَتَتَوَضَّأُ مِنْ بِئْرِ بُضَاعَةَ وَهِيَ بِئْرٌ يُطْرَحُ فِيهَا لُحُومُ الْكِلاَبِ وَالْحِيَضُ وَالنَّتَنُ فَقَالَ " الْمَاءُ طَهُورٌ لاَ يُنَجِّسُهُ شَىْءٌ " .
It was narrated that Abu Sa'eed Al-Khudri said: "It was said: 'O Messenger of Allah, you perform Wudu' from the well into which the bodies of dogs, menstrual rags and garbage are thrown?' He said: 'Water is pure and it is not made impure by anything.'"
Reference : Sunan an-Nasa'i 326In-book reference : Book 2, Hadith 2English translation : Vol. 1, Book 2, Hadith 327