(1) باب المياه
And Al-Baihaqi reported:
"Water is pure unless any impure thing is added which changes its smell, taste and colour". (ID)
Reference (ID): Bulugh al-Maram 4 (ID)
In-book reference (ID): Book 1, Hadith 4 (ID)
English translation (ID): Book 1, Hadith 4 (ID)