Sayyiduna Tha'labah bin al-Hakam (may Allah be pleased with him) narrates: I heard the Messenger of Allah (peace and blessings be upon him) say: "Plunder is not lawful." Then some people plundered some sheep and goats, and he was informed of it, so the Prophet (peace and blessings be upon him) said: "Overturn the cooking pots and whatever is in them."
Hadith Referenceالمعجم الكبير للطبراني / باب الثاء / 1364