It was narrated by Ahmad (4/321), al-Tabarani as well (3357), and Ibn Hibban (2291). I have not been able to identify Sa'id ibn al-Mundhir. This wording has previously been reported through other Companions; see no. 991, if you wish.
1673 — “Plundering is not lawful.”
It was narrated by Ibn Majah (3938), al-Tahawi in al-Mushkil (2/131), Abd al-Razzaq (18841), Ibn Hibban (1679), al-Hakim (2/134), al-Tayalisi (no. 1195), Ahmad (5/367), and al-Tabarani in al-Mu'jam al-Kabir (1371–1380), through various chains from Simak ibn Harb, from Tha'labah ibn al-Hakam, who said: “We came upon some sheep belonging to the enemy and plundered them, so we set up our cooking pots. The Prophet, peace and blessings be upon him, passed by the pots and ordered that they be overturned. Then he said,” and he mentioned the above hadith.
Al-Hakim said: “Its chain of transmission is authentic.” Al-Dhahabi did not comment on it, and it is as he said. Asbat ibn Nasr contradicted them, narrating it from Simak, from Tha'labah, from Ibn Abbas, and then mentioning it. Al-Hakim narrated this version. Asbat ibn Nasr made frequent errors, as al-Hafiz said; therefore, he is not used as evidence when he alone reports something, let alone when he contradicts others.
It also has a supporting report from a man among the Ansar, who said: “We went on a journey with the Messenger of Allah, peace and blessings be upon him, and the people suffered severe need and hardship. They came upon some sheep and plundered them. Our pots were boiling when the Messenger of Allah, peace and blessings be upon him, came walking with his bow. He overturned our pots with his bow, then began covering the meat with earth, and said: ‘Plundering is no more lawful than carrion—or carrion is no more lawful than plundering.’” Hannad was uncertain as to which wording it was.