Hadith 4

Bulugh al-Maram

Book 1: The Book of Purification

Chapter 1

Water

باب المياه

Bulugh al-Maram 4
وَلِلْبَيْهَقِيِّ: { اَلْمَاءُ طَاهِرٌ إِلَّا إِنْ تَغَيَّرَ رِيحُهُ, أَوْ طَعْمُهُ, أَوْ لَوْنُهُ; بِنَجَاسَةٍ تَحْدُثُ فِيهِ } 1‏ .‏
And Al-Baihaqi reported:

“Water is pure unless any impure thing is added which changes its smell, taste and colour”.