Sunan Abu Dawud
4125
Sahih+3

Narrated Salamah ibn al-Muhabbaq: On the expedition of Tabuk the Messenger of Allah (ﷺ) came to a household and, seeing a bucket hanging, asked for water. They said: Messenger of Allah, the animal died a natural death. He replied; Its tanning is its purification

SahihAl-Albani
SahihMuhammad Muhyi Al-Din Abdul Hamid