Sunan Ibn Majah, Chapter: The Chapters on Rulings

Ibn Muhayyisah Al-Ansari told him that a she-camel belonging to Bara used to wander free. It entered a garden belonging to some people and caused some damage. The Messenger of Allah (saw) was told of that, and he ruled that property was to be protected by its owners of livestock were responsible for any damage caused by their animals during the night.