A similar report was narrated from Ibn 'Umar, but he did not mention Khaibar,
Sunan an-Nasa'i Book 42, Hadith 75
← Previous Hadith the Messenger of Allah forbade (the flesh of) domesticated donkeys on the Day of Khaibar.

Sunan an-Nasa'i Book 42, Hadith 74 Next Hadith → "On the Day of Khaibar, the Messenger of Allah forbade the flesh of domesticated donkeys, cooked or raw."

Sunan an-Nasa'i Book 42, Hadith 76