Maliks Muwatta Book 45, Hadith Number 12.

Section : The Making a Haram of Madina.

Malik related to me from Yunus ibn Yusuf from Ata ibn Yasar that Abu Ayyub al-Ansari found some boys who had driven a fox into a corner, and he chased them away from it.

Malik said, “I only know that he said, ‘Is this done in the Haram of the Messenger of Allah, may Allah bless him and grant him peace?'”