Sunan Ibn Majah
3938
Sahih+3

It was narrated that Tha’labah bin Hakam said:“We came across some of the enemy’s sheep and plundered them, and set up our cooking pots. The Prophet (ﷺ) passed by the pots and ordered that they be overturned, then he said: ‘Plunder is not permissible.’”

SahihAl-Albani
SahihMuhammad Fouad Abd al-Baqi