Severity concerning plunder

It is narrated from Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) that he said: On the day of Khaybar the people plundered some goats, then slaughtered them and began to cook their meat. Then the Messenger of Allah (peace and blessings be upon him) came and gave an order about the pots, so they were overturned, and he (peace and blessings be upon him) said: "Indeed, plunder (plundered goods) is not proper."

It is narrated from Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings be upon him) said: "He is not one of us who plunders, or snatches, or points towards snatching."
Imam Bukhari used Abu Kudaynah Yahya bin al-Muhallab as evidence, and this hadith is sahih (authentic), but the two Shaykhs (Bukhari and Muslim) did not record it.