Musnad Ahmad 30:1668

Mu'awiyah narrated to us, he said: Za'idah narrated to us, he said: Muhammad ibn 'Amr narrated to us, from Abu Salamah, from Abu Hurairah, "That the Messenger of Allah (ﷺ) prohibited on the day of Khaybar every beast of prey with a canine tooth, the animal used for target practice (al-mujaththamah), and the domestic donkey."