Sahih al-Bukhari 174

Hadith text

And narrated Hamza bin 'Abdullah:My father said. "During the lifetime of Allah's Apostle, the dogs used to urinate, and pass through the mosques (come and go), nevertheless they never used to sprinkle water on it (urine of the dog)

Hamza bin Abdullah bataate hain ke unke waalid ne kaha: "Nabi (ﷺ) ke zamane mein kutte masjid mein peshab karte aur guzarte the, magar log us jagah paani nahi chhidakte the."

Sahih al-Bukhari 174 · Book 4, Hadith 40